[jaxrs] Fix response annotation generation (fixes #2588)

[amcginn]

PR checklist

• Read the contribution guidelines.
• Ran the shell script under ./bin/ to update Petstore sample so that CIs can verify the change. (For instance, only need to run ./bin/{LANG}-petstore.sh and ./bin/security/{LANG}-petstore.sh if updating the {LANG} (e.g. php, ruby, python, etc) code generator or {LANG} client's mustache templates). Windows batch files can be found in .\bin\windows\.
• Filed the PR against the correct branch: master for non-breaking changes and 3.0.0 branch for breaking (non-backward compatible) changes.

Description of the PR

(details of the change, additional tests that have been done, reference to the issue for tracking, etc)

• Added logic in the JaxRS Server generator to translate the CodegenResponse return type and container type
• Updated the JavaJaxRS api.mustache file to correctly output the response type and container type (if applicable)

[jmatcuk]

Would you revert the formatting changes please.

[amcginn]

This was done on purpose as "void.class" is not a class in Java, so I updated it to "Void.class."

[wing328]

@amcginn I think that might introduce a minor issue:

--- a/samples/server/petstore/jaxrs-cxf/src/gen/java/io/swagger/api/PetApi.java
+++ b/samples/server/petstore/jaxrs-cxf/src/gen/java/io/swagger/api/PetApi.java
@@ -32,7 +32,7 @@ public interface PetApi  {
     @ApiOperation(value = "Add a new pet to the store", tags={ "pet",  })
     @ApiResponses(value = { 
         @ApiResponse(code = 405, message = "Invalid input") })
-    public void addPet(@Valid Pet body);
+    public Void addPet(@Valid Pet body);

void becomes Void in the method signature and the code won't compile.

[amcginn]

I ran the jaxrs-cxf-petstore-server.sh while on master and this happened as well.

[amcginn]

Closing as this was addressed by another PR: #6373