Add several ATF tests that deal with multiple fibs. They're described in
several different PRs, but the tests share some common code, so I'm
committing them together.
sbin/ifconfig/tests
sbin/ifconfig/tests/fibs_test.sh
sbin/ifconfig/tests/Makefile
sbin/ifconfig/Makefile
Add fibs_test.sh, which regresses bin/187551
tests/sys/netinet
tests/sys/netinet/fibs_test.sh
tests/sys/netinet/udp_dontroute.c
tests/sys/netinet/Makefile
tests/sys/Makefile
Add fibs_test.sh, which regresses kern/167947, kern/187552
kern/187549, kern/187550, and kern/187553
etc/mtree/BSD.tests.dist
Add newly created directories
PR: bin/187551
PR: kern/167947
PR: kern/187552
PR: kern/187549
PR: kern/187550
PR: kern/187553
Discussed with: melifaro
MFC after: 3 weeks
Sponsored by: Spectra Logic Corporation
c03f0a88b5