Merge pull request #105 from travis-ci/ha-feature-fog-update

Update gems
Merge pull request #106 from travis-ci/hh-fix-cancel-restart

Don't restart errored jobs if they are cancelled
bring back logging PID and TID
Merge pull request #107 from travis-ci/sf-bring-back-pid-and-tid

Bring back logging PID and TID
Merge branch 'master' into staging