BZ 1156213: Cinder default setting san_thin_provision should be true

Currently  cinder_san_thin_provision option is false to disable creation of thin-provisioned volumes. The default should be true to enable thin provisioning which is the recommended setting.

Fixes bug https://bugzilla.redhat.com/show_bug.cgi?id=1156213

This requires the puppet-cinder manifests to be pulled in
https://review.openstack.org/#/c/131239/