Fix openstack glance upload to compatible with grizzly and also
backward compatible
Changed default URL from https to http.  Added nonzero exit code when failures are present.
Fixed typo in target name for OpenStack.
Removed asn1 token verification in OpenStack plugin

This is handled by the glance client internally. Also moved helper
methods into the class definition of OpenStack plugin.
Merge pull request #335 from dkliban/openstack_glance_2

Fixed OpenStack to work with Grizzly and later OpenStack releases
Merge pull request #336 from redhat-imaging/test/jenkins

End to end test script improvement