Add generic reset-status method in admin actions' testcases
Add generic reset-status method in admin actions' testcases

Replace '_issue_volume\backup\snapshot_reset' methods' arthimetic
with '_issue_resource_reset' to make code clean.

Also, make it convenient for subsequent reset operations on
other resources such as general group and their snapshots.

Change-Id: I8c643d15655fb2402d69051f6ac799d423cb1609

Hybrid-Cloud/cinder,openstack/cinder,phenoxim/cinder,Datera/cinder,j-griffith/cinder,mahak/cinder,openstack/cinder,phenoxim/cinder,j-griffith/cinder,eharney/cinder,ge0rgi/cinder,eharney/cinder,mahak/cinder,Hybrid-Cloud/cinder,Datera/cinder