Implement missing mocks to remove error noise during test run

Several cinder API mocks were missing from these tests. This patch
adds those so the error noise reported in bug 1329391 is removed.

Change-Id: Ib0ca72ff0df92d1c5187a86469ea7fc93873de11
Closes-Bug: 1329391
Merge "Implement missing mocks to remove error noise during test run"