Adding the ability to modify cluster templates
Adding the ability to modify cluster templates

- Added function for update cluster template

Change-Id: Ic9f3c685c5d1e43d9d3331abf5bae5e3a932db1d
Implements: blueprint modifying-cluster-template

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