Add job-delete to CLI
Add job-delete to CLI

Change-Id: I6b61e814db648cbbd487b56978f9e45ed522719f
Implements: blueprint python-savannaclient-cli

openstack/python-saharaclient,citrix-openstack-build/python-saharaclient,citrix-openstack-build/python-saharaclient,citrix-openstack-build/python-saharaclient