Resolve Proto Lint Issues

[rauljordan]

This PR skips running golangci-lint on generated proto files in our repo, as they are generated code, as well as regenerates and checks-in pb.go files to match latest proto schema. There were some mismatches in field names that would cause golangci-lint to fail in current master.

This moves the proto compatibility tests to a _compatibility folder, as those will be ignored by the go tool when performing a go get, preventing travis errors.

$ go help packages

Directory and file names that begin with "." or "_" are ignored
by the go tool, as are directories named "testdata".

[prestonvanloon]

Please run goimports -w proto/**/*.go

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@d5dcc25). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff            @@
##             master   #3044   +/-   ##
========================================
  Coverage          ?   1.16%           
========================================
  Files             ?       7           
  Lines             ?     342           
  Branches          ?       0           
========================================
  Hits              ?       4           
  Misses            ?     338           
  Partials          ?       0