Update FileMan22.2 tests to only run if 22.2 is installed

Alter the command that calls the EN^XTMUNIT to have a post-condition that
only runs the tests if 22.2 is part of the return of $$VERSION^XPDUTL for
the FileMan "DI" namespace

OSEHRA-Id: http://issues.osehra.org/browse/OAT-90
Change-Id: Iec1cabc3d3227d0d3fcbf1efbbc3edc1d0cb1fc8
Merge "Update FileMan22.2 tests to only run if 22.2 is installed"