Remove obsolete tenant parameter
Remove obsolete tenant parameter

The puppet-keystone module has removed the tenant parameter from the
keystone_user resource, so this update is needed for compatability.

Change-Id: Ib11cf074acee2429f81882139e3409138585e45c

openstack/puppet-monasca,openstack/puppet-monasca,openstack/puppet-monasca,openstack/puppet-monasca,openstack/puppet-monasca