Emulab DB update 577 won't work unless PGENISUPPORT is defined

It assumes the APT_Profile perl module is installed.

*** dbupdate:
      could not parse 577: Can't locate APT_Profile.pm in @INC (you may need to install the APT_Profile module) (@INC contains: /users/mike/obj/boss/install /users/mike/obj/boss/install/../tbsetup /users/mike/obj/boss/install/../db /users/mike/obj/boss/install/../event/lib /users/mike/obj/boss/install/../clientside/lib/event /users/mike/obj/boss/install/../clientside/lib/libtb /users/mike/obj/boss/install/../../../testbed/tbsetup /users/mike/obj/boss/install/../../../testbed/install /users/mike/obj/boss/install/../../../testbed/clientside/lib/event /usr/testbed/lib /usr/local/lib/perl5/site_perl/mach/5.24 /usr/local/lib/perl5/site_perl /usr/local/lib/perl5/5.24/mach /usr/local/lib/perl5/5.24 .) at 577 line 3.
BEGIN failed--compilation aborted at 577 line 3.

gmake: *** [GNUmakefile:363: update-testbed-install] Error 1