[Python experimental] Readme improvements (#6031)

* Python experimental readme improvements

* Python experimental readme improvements

* execute scripts in bin directory

samples/client/petstore/python-experimental/docs/FakeApi.md

@@ -35,6 +35,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -90,6 +96,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -146,6 +158,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -202,6 +220,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -258,6 +282,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -314,6 +344,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -370,6 +406,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -422,6 +464,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -478,6 +526,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -534,6 +588,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -592,13 +652,22 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
-configuration = petstore_api.Configuration()
-# Configure HTTP basic authorization: http_basic_test
-configuration.username = 'YOUR_USERNAME'
-configuration.password = 'YOUR_PASSWORD'
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
 
-# Defining host is optional and default to http://petstore.swagger.io:80/v2
-configuration.host = "http://petstore.swagger.io:80/v2"
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure HTTP basic authorization: http_basic_test
+configuration = petstore_api.Configuration(
+    username = 'YOUR_USERNAME',
+    password = 'YOUR_PASSWORD'
+)
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient(configuration) as api_client:
@@ -689,6 +758,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -760,6 +835,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -831,6 +912,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client:
@@ -884,6 +971,12 @@ from __future__ import print_function
 import time
 import petstore_api
 from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
 
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient() as api_client: