Add option to force removal of service watchdog cron job

so that the job can always be removed when the package is removed.
Add and remove service watchdog cron job

when the package is installed and removed.
Service Watchdog version bump
Service Watchdog version bump
Service Watchdog version bump
Service Watchdog version bump
Merge pull request #585 from phil-davis/master

Service Watchdog manage cron job on package install and deinstall