[feature #1255] prefix and suffix for model names.

This implements the command line arguments `--model-name-prefix` and `--model-name-suffix`
for all languages which do not override `DefaultCodegen.toModelName()`.
This fixes most of swagger-api/swagger-codegen#1255.

Connection to the maven plugin works with additional-properties, a more explicit
parameter waits for swagger-api/swagger-codegen#2168.

modules/swagger-codegen-cli/src/main/java/io/swagger/codegen/cmd/Generate.java

@@ -73,6 +73,12 @@ public class Generate implements Runnable {
     @Option(name = {"--model-package"}, title = "model package", description = CodegenConstants.MODEL_PACKAGE_DESC)
     private String modelPackage;
 
+    @Option(name = {"--model-name-prefix"}, title = "model name prefix", description = CodegenConstants.MODEL_NAME_PREFIX_DESC)
+    private String modelNamePrefix;
+
+    @Option(name = {"--model-name-suffix"}, title = "model name suffix", description = CodegenConstants.MODEL_NAME_SUFFIX_DESC)
+    private String modelNameSuffix;
+
     @Option(name = {"--instantiation-types"}, title = "instantiation types", description = "sets instantiation type mappings in the format of type=instantiatedType,type=instantiatedType." +
             "For example (in Java): array=ArrayList,map=HashMap. In other words array types will get instantiated as ArrayList in generated code.")
     private String instantiationTypes;
@@ -156,6 +162,14 @@ public class Generate implements Runnable {
             configurator.setModelPackage(modelPackage);
         }
 
+        if(isNotEmpty(modelNamePrefix)){
+            configurator.setModelNamePrefix(modelNamePrefix);
+        }
+
+        if(isNotEmpty(modelNameSuffix)){
+            configurator.setModelNameSuffix(modelNameSuffix);
+        }
+
         if(isNotEmpty(invokerPackage)) {
             configurator.setInvokerPackage(invokerPackage);
         }

modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java

@@ -108,6 +108,14 @@ public class DefaultCodegen {
             this.setEnsureUniqueParams(Boolean.valueOf(additionalProperties
                     .get(CodegenConstants.ENSURE_UNIQUE_PARAMS).toString()));
         }
+
+        if(additionalProperties.containsKey(CodegenConstants.MODEL_NAME_PREFIX)){
+            this.setModelNamePrefix((String) additionalProperties.get(CodegenConstants.MODEL_NAME_PREFIX));
+        }
+
+        if(additionalProperties.containsKey(CodegenConstants.MODEL_NAME_SUFFIX)){
+            this.setModelNameSuffix((String) additionalProperties.get(CodegenConstants.MODEL_NAME_SUFFIX));
+        }
     }
 
     // override with any special post-processing for all models
@@ -284,6 +292,14 @@ public class DefaultCodegen {
         this.modelPackage = modelPackage;
     }
 
+    public void setModelNamePrefix(String modelNamePrefix){
+        this.modelNamePrefix = modelNamePrefix;
+    }
+
+    public void setModelNameSuffix(String modelNameSuffix){
+        this.modelNameSuffix = modelNameSuffix;
+    }
+
     public void setApiPackage(String apiPackage) {
         this.apiPackage = apiPackage;
     }

modules/swagger-codegen/src/main/java/io/swagger/codegen/config/CodegenConfigurator.java

@@ -320,6 +320,8 @@ public class CodegenConfigurator {
         checkAndSetAdditionalProperty(artifactId, CodegenConstants.ARTIFACT_ID);
         checkAndSetAdditionalProperty(artifactVersion, CodegenConstants.ARTIFACT_VERSION);
         checkAndSetAdditionalProperty(templateDir, toAbsolutePathStr(templateDir), CodegenConstants.TEMPLATE_DIR);
+        checkAndSetAdditionalProperty(modelNamePrefix, CodegenConstants.MODEL_NAME_PREFIX);
+        checkAndSetAdditionalProperty(modelNameSuffix, CodegenConstants.MODEL_NAME_SUFFIX);
 
         handleDynamicProperties(config);