Fix parameters in VMware glance configuration

Cherry-picked from https://review.openstack.org/#/c/96442/

A number of parameters in the VMware glance configuration commands were
missing the preceding dashes. This prevented the commands from running
successfully.

Change-Id: I0dd6ee20aec2447b3e9a8d923c93dcd51a2d882f
Closes-Bug: #1322269