Speed up kaminario's drivers tests
Speed up kaminario's drivers tests

Reduce time of execution kaminario's drivers failover_host tests
by patching eventlet.sleep function

Change-Id: I2e4f9309ba10bfc4b2dfb88989712e1dd5bf992a
Closes-Bug: #1627659

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