Adding support for findServerVolumes

findServerVolumes added to the client.
Unit tests for server functions in the client added.
Removed unneeded print outputs during tearDown of unit tests.
Minor typo corrections.
Renamed test_HPLeftHandMockServer_flask to HPLeftHandMockServer_flask.

Change-Id: I7bbf5fa6f67efdf9bff272286cd057078a5b509c
Adding new unit test to check volume sizes

Added a new unit test to make sure that volumes are created
with the correct size.

Change-Id: Ic0d4194a9661447d5f8907095ac252ce463b0e11