Allow for 2-leg oauth where there is no token or token_secret
Merge pull request #5650 from jwforres/oauth_2_leg

Merged by openshift-bot
Automatic commit of package [openshift-origin-cartridge-postgresql] release [1.27.3-1].
Automatic commit of package [rubygem-openshift-origin-controller] release [1.28.3-1].
Automatic commit of package [rubygem-openshift-origin-console] release [1.28.2-1].
Automatic commit of package [rubygem-openshift-origin-common] release [1.27.3-1].
Automatic commit of package [openshift-origin-node-util] release [1.27.3-1].