vdsmd: remove reconfigure sanlock on 'reconfigure' verb

reconfigure sanlock is perform at every restart, so there is no need for
performing that on reconfigure target.

if it is required, we need vdsm-tool configure or similar verb, as
systemd does not support custom targets.

Change-Id: I61a4e99396b15e67b2c9385b654e981a1d7c3429
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/18466
Reviewed-by: Zhou Zheng Sheng <zhshzhou@linux.vnet.ibm.com>
Reviewed-by: Federico Simoncelli <fsimonce@redhat.com>