[Java][Spring] fix wrong values with enum variables in path parameters which generated allowableValues with double quote

[yangguangxiadeyun]

Hi team and @jeff9finger @nmuesch @lwlee2608 , this PR is to fix wrong values with enum variables in path parameters which generated allowableValues with double quote(#6762)
According to javadoc swagger-annotations ApiParam, allowableValues sets a list of values, provide a comma-separated list. For example: first, second, third. If using double quote, the URL path would become something like http://example.com/foo/"bar" while we're expecting http://example.com/foo/bar. Thus I think we should not use double quote for each value when it's used in path variable.

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[yangguangxiadeyun]

Hi @yue9944882 @wing328 , it seems that ci/circleci build is failed with existing code and irrelevant with the change of this PR. And there are lots of PRs failed with same reason.
I see this few lines of log:

apis/PetApi.ts(360,59): error TS2554: Expected 2 arguments, but got 3.
npm ERR! code 2
npm ERR! path /home/circleci/OpenAPITools/openapi-generator/samples/openapi3/client/petstore/typescript/builds/default
npm ERR! command failed
npm ERR! command sh -c npm run build

Please help to check/follow up. Thank you.

[wing328]

@yangguangxiadeyun the circleci failure has been fixed in the master so don't worry about it.

[wing328]

Tested locally and confirmed the fix but this fix has a limitation if i'm not mistaken. If the enum allowable values contain double quote ", then this fix won't work but we'll instead tackle this edge cases when it comes up later.