orchestration api tests remove duplicate client assignment

Many tests are setting cls.orchestration_client but it's
already assigned in the superclass setUpClass.

Change-Id: Iac5477561d4256d63d3c592d3dbb05a4a359b323
Merge "orchestration api tests remove duplicate client assignment"
Move run_ssh class variable into skip decorators

We shouldn't do a getattr on CONF in the class definition. It will cause
import errors if there isn't a config file. Just use
CONF.compute.run_ssh in the skip decorator.

Change-Id: I948ac411d4af9844f2c69fb91f7c0fdc3aaf7fe4
Merge branch 'master' of https://github.com/openstack/tempest