Add lvm driver options to sample config
Add lvm driver options to sample config

Closes-Bug: #1599119

Change-Id: Idda0f83b900fe338de352f146fa2fe6cda2308dd

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