[swagger, all] enum data for integer parameters are not put into operations data

I can't reopen the issue #3964 so I post a new issue.

Description

There are 2 problems:

1. Proper descriptions for integer enum parameters are not present with -l swagger for array items. As seen from gist, integerEnum parameter is properly dumped, but integerArrayEnum does not contain enum in items.
2. Proper descriptions for integer enum parameters are not present in -DdebugOperations. As seen from gist, "isEnum" : true and allowableValues are only present for string parameters.

Swagger-codegen version

Current master (2.2.3-SNAPSHOT)

Swagger declaration file content or url

Source JSON: https://gist.github.com/checat/1d9b014e39e9767cf30ba401d2cf18c4#file-source-json

Result JSON: https://gist.github.com/checat/1d9b014e39e9767cf30ba401d2cf18c4#file-swagger-json

debugOperations.json https://gist.github.com/checat/1d9b014e39e9767cf30ba401d2cf18c4#file-debugoperations-json

Command line used for generation

java -DdebugOperations -jar swagger-codegen-cli.jar generate -i source.json -l swagger -o out-swagger >debugOperations.json

Steps to reproduce

Generate and see the problems in the description.

Start with the Java CLI generation path invoked by swagger-codegen-cli.jar, using the linked source JSON and the -l swagger command. Compare the generated Swagger JSON and debugOperations.json with the described results; done means integer enum metadata appears for array items and in debug operations, not only for string parameters.