Add unit test for glanceclient ssl options

Commit 0fe6997856ae39afcbed0ad53cc2916ec369c9d5 added code to pass ssl
options when creating the glance client but was missing a unit test.

Related-Bug: #1279381

Change-Id: Iaf1b8e59d98382c630b8e4e13234b9028a873482
Merge "Add unit test for glanceclient ssl options"