Use PATCH method to update resources
Use PATCH method to update resources

Senlin api uses PATCH to update resources, client side
should keep consistency with server side.

Change-Id: I724f0cb6b8fd2d6cdb6104f1cf3a7cb933d26442
Partial-Bug: #1472557

openstack/python-senlinclient,stackforge/python-senlinclient,stackforge/python-senlinclient,openstack/python-senlinclient