Only test for Security as a LeftAndMain subclass since framework provides it
Only test for Security as a LeftAndMain subclass since framework provides it

If Reports (for example) is run, it may be referencing TestOnly DataObjects that
are not loaded into the current unit test class. This change means that only specific
items will be checked.

silverstripe/silverstripe-admin,silverstripe/silverstripe-admin,silverstripe/silverstripe-admin