Change logrotate params for OCW Plone
Change logrotate params for OCW Plone

Change strategy to `copytruncate` and specify `notifempty`
It looks like the prerotate and postrotate directives reference
a script in a `bin` directory that does not exist.

Also fix some paths and fix the check for whether to rotate the
OCWEngines logs.

mitodl/salt-ops,mitodl/salt-ops