Add unit tests to instance Retrieve Password action

This patch adds two tests to optional Retrieve Password action on
instance, that allows users to decrypt, on client side, the password
generated for the Admin session

Change-Id: I96c65a9bd5cb1dac867d999b0bebacb7cb8810ee
Volume Snapshots tab - more button dropdown fix text

On the More button dropdown, 'Launch' should be
'Launch as Instance'.

Closes-Bug: #1322273

Change-Id: I4abc5ca5a287d80957b7cfd5093747a8bcc89bdd
Merge "Volume Snapshots tab - more button dropdown fix text"
Merge "Add unit tests to instance Retrieve Password action"