Update pid file handling
Update pid file handling

As we now have a shutdown CLI command we don't actually need the
pid file anymore. So any errors on creation can be ignored.

Signed-off-by: Hannes Reinecke <b0d1e9e4a4e27620745ff49be9000da3174a4cc6@suse.de>

vijaychauhan/multipath-tools,vijaychauhan/multipath-tools,unakatsuo/multipath-tools,unakatsuo/multipath-tools,unakatsuo/multipath-tools