Bugfix restoring tempest state on OSPd7
Bugfix restoring tempest state on OSPd7

Looks like "tempest" command is not available in OSPd7
our OSPd deployments so it shouldn't be executed.
This small fix should do it.

Fixes issue:
"/bin/bash: tempest: command not found"
during this task.

Change-Id: I93a2937189c46dc7ddfa60cad770483368c846a4

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared