Fixup ci-sync.sh to cover committer ident.

Testing Done:
None - can only be tested on pantsbuild.pants master, but in response to this failure: https://travis-ci.org/pantsbuild/pants/jobs/35969933
CI did go green here though - so nothing horribly more broken: https://travis-ci.org/pantsbuild/pants/builds/35972662

Bugs closed: 600

Reviewed at https://rbcommons.com/s/twitter/r/1065/