Update 3PAR drivers to pass cert test

This patch updates both the HP 3PAR Fibre Channel
and HP 3PAR iSCSI block storage drivers so that they
can pass the driver certification tests.  We also updated
the unit tests to use mock instead of mox.

These versions of the drivers require the new 3.0.0 hp3parclient,
which can be downloaded from the pypi repository:
https://pypi.python.org/pypi/hp3parclient
The new hp3parclient requires the 3.1.3 firmware on the HP 3PAR.

The driver certification results:
Related-Bug: #1278575
Related-Bug: #1278577

Closes-Bug: #1279137

Change-Id: I72e0a76c865e54c58e41cc4409555d9042e30267
DocImpact: Document new driver requirements.
Merge "Update 3PAR drivers to pass cert test"