ovs-ctl.in: Don't stop forwarding while restarting the database.

ovs-ctl.in: Don't stop forwarding while restarting the database.

Previously, the force-reload-kmod command would stop forwarding, stop
the database, restart the database, and then restart forwarding.  If the
database is large, it can take a while to be read (we've seen as much as
10 seconds), which means the switch is not forwarding traffic during
that time.

This change stops and starts the database before restarting the
forwarding path.  This means that ovs-vswitchd will lose its
connectivity to the database during a force-reload-kmod, but while it
will complain a little in the logs, it will continue to operate
properly.

Signed-off-by: Justin Pettit <jpettit@nicira.com>
Feature #12643