Use json camel case when GetUseJSONNamesForFields is enabled

[xin-au]

Use json camel case when GetUseJSONNamesForFields is enabled

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[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@fdf0635). Click here to learn what that means.
The diff coverage is 91.66%.

@@            Coverage Diff            @@
##             master     #985   +/-   ##
=========================================
  Coverage          ?   53.43%           
=========================================
  Files             ?       40           
  Lines             ?     4027           
  Branches          ?        0           
=========================================
  Hits              ?     2152           
  Misses            ?     1676           
  Partials          ?      199

Impacted Files	Coverage Δ
protoc-gen-swagger/genswagger/template.go	54.23% <91.66%> (ø)

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[xin-au]

@googlebot I signed it!

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CLAs look good, thanks!

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[johanbrandhorst]

Hi @xin-au, thanks for your contribution! Could you explain what this fixes? It looks like a bug fix to me. If you could raise an issue that is fixed by this PR that'd be great. Don't have to go into too much detail. If not, an explanation here would suffice. If this is indeed a bug fix, we should try to add some tests to prevent this from regressing in the future. Could you look into adding some tests please?

Thanks again!

[xin-au]

Hi @johanbrandhorst , thanks for your suggestions and details!
I will create an issue to describe it and add some tests.
Thanks!

[xin-au]

The issue associated with this PR. #986

[johanbrandhorst]

Nice work, LGTM!

[xin-au]

Thanks @johanbrandhorst !