rc: change PHP error reporting a bit more
rc: change PHP error reporting a bit more

* We can now see the errors we suppress.  E_WARNING is the one that
  should be zapped as soon as possible.

* According to the manual, display_startup_errors should not be enabled.

* Add ignore_repeated_errors to avoid multiple reports in e.g. loops.

opnsense/core,opnsense/core,opnsense/core,opnsense/core,opnsense/core,opnsense/core