Remove openstack-common.conf

This project does not use any files at all from oslo-incubator, remove
openstack-common.conf.

Change-Id: I91a3b8d91e3c9c717115c19c56b2386d09466775
add documentation for the delete command

Change-Id: Iaa84c66aab01bf404ad64e960578a913254b21e4
add documentation for globbed parameter feature

change I5bb1074 added a globbed parameter feature for updating and
deleting JJB jobs but did not provide documentation for it.
Hopefully this change will help users discover this feature.

Change-Id: I6e527c818f25a5aa061a19308f22495221e3dc93
Merge "Remove openstack-common.conf"
Merge "add documentation for the delete command"
Merge "add documentation for globbed parameter feature"