HPE 3PAR: file share support of AD in devref
HPE 3PAR: file share support of AD in devref

Updating hpe_3par_driver document with manila file share
support using AD user.

Change-Id: If12f83e10b658beb2d59a05f38804706f22cd62d

bswartz/manila,bswartz/manila,NetApp/manila,NetApp/manila,openstack/manila,vponomaryov/manila,openstack/manila,vponomaryov/manila