Switch to OSC module
Switch to OSC module

For now, we use client module of senlin command for API.
But senlin command retired and we need to use client module
for OSC to call API.
This patch switches client module from CLI to OSC to call API.

Change-Id: Ie942180e640aeda59d46b814d123dd385f82da47

stackforge/senlin-dashboard,openstack/senlin-dashboard,stackforge/senlin-dashboard,stackforge/senlin-dashboard,openstack/senlin-dashboard,openstack/senlin-dashboard,openstack/senlin-dashboard