Deprecate VMware store single datastore options
Deprecate VMware store single datastore options

The options vmware_datastore_name and vmware_datacenter_path are
redundant with vmware_datastores provided by the multi-datastore
support in blueprint vmware-store-multiple-datastores.

Depends-On: I61d1a6b07fe384c49958dbf3f912a65e52cc4f6c

Change-Id: I573f415f2a44c35838a0a1a2c30da71e36b13549

saeki-masaki/glance_store,openstack/glance_store,redhat-openstack/glance_store,jamielennox/glance_store,jamielennox/glance_store,cpallares/glance_store,redhat-openstack/glance_store,cpallares/glance_store,openstack/glance_store,saeki-masaki/glance_store