controller: Support user defined vrf names. #2610

Job	Run time
linux rpm fedora	6m 57s
Prepare container	3m 17s
osx clang --disable-ssl	2m 26s
linux gcc --disable-ssl	2m 38s
linux clang --disable-ssl	2m 43s
linux gcc test -300	10m 5s
linux gcc test 301-600	7m 38s
linux gcc test 601- unstable	7m 46s
linux clang test sanitizers -300	13m 40s
linux clang test sanitizers 301-600	10m 49s
linux clang test sanitizers 601- unstable	12m 41s
linux gcc test -ljemalloc -300	10m 34s
linux gcc test -ljemalloc 301-600	7m 56s
linux gcc test -ljemalloc 601- unstable	7m 32s
linux gcc system-test-dpdk dpdk -100	17m 46s
linux gcc system-test-dpdk dpdk 101- unstable	17m 12s
linux gcc system-test-userspace -100	16m 47s
linux gcc system-test-userspace 101- unstable	15m 57s
linux gcc system-test -100	19m 1s
linux gcc system-test 101- unstable	20m 14s
linux clang system-test sanitizers -100	21m 7s
linux clang system-test sanitizers 101- unstable	22m 18s
linux x86 gcc --disable-ssl	2m 49s
	4h 19m 53s

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