Specify additional gems to be loaded in the broker and console

 Specify additional gems to be loaded in the broker and console

Bug <1094454>
Bugzilla link <https://bugzilla.redhat.com/show_bug.cgi?id=1094454>
Added ability to specify additional gems to be loaded in the broker and console Gemfiles.
To be consistent with `OpenShift::Config`, we should be more permissive of whitespace.