Update signet to 0.5.1
Update faraday to 0.9.0
Update google-api-client to 0.7.1
Automatic commit of package [rubygem-signet] minor release [0.5.1-1].
Automatic commit of package [rubygem-faraday] minor release [0.9.0-1].
Automatic commit of package [rubygem-google-api-client] minor release [0.7.1-1].