Please note that support for Ruby 1.9.3 has been dropped in Foreman
core's develop branch. Versions 2.0, 2.1, 2.2 and 2.3 are supported and
make up the new test matrix. Other sub-projects such as the smart proxy
are unaffected.
You'll likely see an error installing google-api-client if you're still
using 1.9.3, so you should change Ruby versions.
Gem::InstallError: google-api-client requires Ruby version ~> 2.0.