keepalived: add option to override service running check

keepalived: add option to override service running check

Some init.d scripts like firewall and sqm do not return the actual state
of the service if called with "running" parameter. This result in the
init script called with "start" parameter and the service may not load
the new configuration. Firewall init script is one of this
An option is added in order to skip the "running" check for the service.

Signed-off-by: Francesco Benini <francy.benini@gmail.com>