[Go-server] Fix formatting of go-server generated code (#7162)

* Add missing go-server petstore batch script

* Make go-server confirm to gofmt

modules/swagger-codegen/src/main/resources/go-server/controller.mustache

@@ -6,14 +6,9 @@ import (
 )
 
 type {{classname}} struct {
+}{{#operation}}
 
-}
-
-{{#operation}}
 func {{nickname}}(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set("Content-Type", "application/json; charset=UTF-8")
-		w.WriteHeader(http.StatusOK)
-}
-
-{{/operation}}
-{{/operations}}
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	w.WriteHeader(http.StatusOK)
+}{{/operation}}{{/operations}}

modules/swagger-codegen/src/main/resources/go-server/logger.mustache

@@ -20,4 +20,4 @@ func Logger(inner http.Handler, name string) http.Handler {
             time.Since(start),
         )
     })
-}
+}

modules/swagger-codegen/src/main/resources/go-server/main.mustache

@@ -1,6 +1,9 @@
 package main
 
 import (
+	"log"
+	"net/http"
+
 	// WARNING!
 	// Change this to a fully-qualified import path
 	// once you place this file into your project.
@@ -9,14 +12,12 @@ import (
 	//    sw "github.com/myname/myrepo/{{apiPath}}"
 	//
 	sw "./{{apiPath}}"
-	"log"
-	"net/http"
 )
 
 func main() {
 	log.Printf("Server started")
 
 	router := sw.NewRouter()
-	
+
 	log.Fatal(http.ListenAndServe(":{{serverPort}}", router))
 }

modules/swagger-codegen/src/main/resources/go-server/routers.mustache

@@ -1,8 +1,9 @@
 package {{packageName}}
 
 import (
-	"net/http"
 	"fmt"
+	"net/http"
+
 	"github.com/gorilla/mux"
 )
 
@@ -42,13 +43,12 @@ var routes = Routes{
 		"GET",
 		"{{{basePathWithoutHost}}}/",
 		Index,
-	},
-{{#apiInfo}}{{#apis}}{{#operations}}{{#operation}}
+	},{{#apiInfo}}{{#apis}}{{#operations}}{{#operation}}
+
 	Route{
 		"{{operationId}}",
 		"{{httpMethod}}",
 		"{{{basePathWithoutHost}}}{{{path}}}",
 		{{operationId}},
-	},
-{{/operation}}{{/operations}}{{/apis}}{{/apiInfo}}
+	},{{/operation}}{{/operations}}{{/apis}}{{/apiInfo}}
 }