Add HP MSA Fiber Channel driver

This commit implements a driver for the HP MSA arrays. Only Fiber
Channel is supported for now.

Implements: blueprint add-msa-2040-driver
DocImpact
Change-Id: I75232cafadf7f6d15c5959d6c054f2e0f4d14e2c
Merge "Add HP MSA Fiber Channel driver"
(Test commit) Change README to reflect Jio's fork of Cinder

Change-Id: I3f26c0a736e63725aec24ca2fa12c707b8e6460f