Add support vSphere Datastore backend for Glance

1. Added Glace parameters for vCenter in classes openstack::controller and
   openstack::controller_ha
2. Created class for this type of glance backend
3. Added Glace parameters for vCenter backend and case for our backend type
   in class openstack::glance
4. Added parsing of required parameters from the UI for calsses
   osnailyfacter::cluster_simple and osnailyfacter::cluster_ha
5. Disabled Swift installation in HA mode

DocImpact
Upstream vsphere patch id: I88478bf4ec5d9a4c65344fbdc04ac973a31f46ea
Change-Id: Icbb46da1e486ceebc1f9f0ce7a4db09323e3605e
Implements: blueprint vsphere-glance-backend
Merge "Add support vSphere Datastore backend for Glance"