Redis restart fails when password changes

[pjsharpe07]

How to reproduce

If the redis password gets changed, then the service fails to restart/pickup the new password change. This leaves the harvester in a bad state - specifically the harvester_run will fail due to a redis password error. This issue is documented upstream.

Expected behavior

When we change the redis password and run the playbooks, then the new password is recognized and all services are running as expected.

Actual behavior

When we change the redis password and run the playbooks it puts the harvester in a bad state - and there may be other unrecognized issues as well.

[chris-macdermaid]

A work around is to log into the server running redis and kill the redis process by running 'kill ' Redis will not be stopped by running 'service redis stop'

[nickumia-reisys]

• FCS resources removed #3710