The mariadb database is currently stored on the root filesystem, which
is far too small for even our limited use. This change adds an lvm
volume for /var/lib/mysql by reducing the size of the swift LV.
signed-off-by: dave kormann <davek@research.att.com>
Change-Id: I0c0d9afb5d8b64f33fa63e64a72f0ac8ed913d9e