Bug 999868 - warns when create-app and add-cartridge and server does not support env vars
Bug 999868 - cleanup
Bug 999868 - encapsulated check for env vars support
Bug 999868 - improved order for messages
Catch gssapi exception, fall back to basic
Merge pull request #462 from fabianofranz/master

Merged by openshift-bot
Merge pull request #463 from liggitt/gssapi_failure

Merged by openshift-bot