The GlusterFS volume driver can be used with Cinder by setting the
following in localrc:
CINDER_DRIVER=glusterfs
CINDER_GLUSTERFS_SHARES="127.0.0.1:/vol1;127.0.0.1:/vol2"
Shares are <host>:<volume> and separated by semicolons.
Change-Id: Iaa105233c9fce8d8fda0a9ea447e045b8d010db7