gluster: new verb to remove host using host UUID

This patch adds a new verb glusterHostRemoveByUuid which
retrives the host name based on uuid passed and uses it to
remove the host.

new verb: GlusterHostRemoveByUuid
return type: bool (success or failure)
possible Exception: GlusterHostNotFoundException /
                    GlusterHostRemoveFailedException.

Signed-off-by: ndarshan <dnarayan@redhat.com>
Change-Id: Idfff258ccc43c276ca7b9c0472dacac2fefce64a
Reviewed-on: http://gerrit.ovirt.org/20648
Reviewed-by: Dan Kenigsberg <danken@redhat.com>
Reviewed-by: Bala.FA <barumuga@redhat.com>