HP 3PAR Fibre Channel Driver and iSCSI Updates

HP 3PAR Fibre Channel Driver and iSCSI Updates

This is the initial FC driver for the HP 3PAR array, along with some
3PAR iSCSI driver cleanup and changes in the HP 3PAR common class.
Summary of changes:
* Initial FC Driver for the Grizzly release (depends on the FC base class
  and nova FC changes https://review.openstack.org/#/c/19992/ &
  https://review.openstack.org/#/c/20003/)
* Updates to iSCSI Driver include volume type and create clone volume support
  as well as general cleanup(comments, copyright, minor bug fixes).
* The tests have been updated to add FC test and the file was renamed
  to reflect both FC and iSCSI 3PAR tests.
* Volume types added for the Grizzly release include cpg, snap_cpg, persona
  and provisioning(thin vs. full)

Partially Implements: blueprint fibre-channel-block-storage

Change-Id: Ie1c2e755aa1bcd5994ea4b02674718721b958e07