revert changes to fakes yaml (#6758)

* revert changes to fakes yaml

the yaml currently includes invalid definitions that do not exist: ('#/definitions/xmlObject').
revert to known good yaml state.

* update template creators

README.md

@@ -970,6 +970,7 @@ Here is a list of template creators:
    * Groovy: @victorgit
    * Go: @wing328
    * Go (rewritten in 2.3.0): @antihax
+   * Haskell (http-client): @jonschoning
    * Java (Feign): @davidkiss
    * Java (Retrofit): @0legg
    * Java (Retrofit2): @emilianobonassi

modules/swagger-codegen/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml

@@ -898,35 +898,6 @@ paths:
       responses:
         '200':
           description: successful operation
-  /fake/xmlFeatures:
-    get:
-      summary: Get some XML
-      operationId: getXmlFeatures
-      produces:
-        - application/xml
-      consumes:
-        - application/xml
-      responses:
-        200:
-          description: Success
-          schema:
-            $ref: '#/definitions/xmlObject'
-    post:
-      parameters:
-        - name: xmlObject
-          in: body
-          required: true
-          schema:
-            $ref: '#/definitions/xmlObject'
-      summary: Post some xml
-      operationId: postXmlFeatures
-      produces:
-        - application/xml
-      consumes:
-        - application/xml
-      responses:
-        200:
-          description: Success
   /fake/inline-additionalProperties:
     post:
       tags:
@@ -971,7 +942,6 @@ paths:
           description: successful operation
           schema:
             $ref: '#/definitions/Client'
-
 securityDefinitions:
   petstore_auth:
     type: oauth2
@@ -1010,7 +980,7 @@ definitions:
         type: string
         description: Order Status
         enum:
-          - placedtest
+          - placed
           - approved
           - delivered
       complete: