controller: Properly handle localnet flows in I+P. #3299

Job	Run time
linux rpm fedora	6m 43s
Prepare container	1m 4s
osx clang --disable-ssl	1m 57s
linux gcc --disable-ssl	2m 34s
linux clang --disable-ssl	2m 37s
linux gcc test -300	9m 14s
linux gcc test 301-600	6m 21s
linux gcc test 601- unstable	6m 32s
linux clang test sanitizers -300	12m 41s
linux clang test sanitizers 301-600	9m 17s
linux clang test sanitizers 601- unstable	11m 46s
linux gcc test -ljemalloc -300	9m 41s
linux gcc test -ljemalloc 301-600	6m 29s
linux gcc test -ljemalloc 601- unstable	6m 47s
linux gcc system-test-dpdk dpdk -100	16m 42s
linux gcc system-test-dpdk dpdk 101- unstable	14m 51s
linux gcc system-test-userspace -100	16m 0s
linux gcc system-test-userspace 101- unstable	13m 49s
linux gcc system-test -100	18m 17s
linux gcc system-test 101- unstable	17m 52s
linux clang system-test sanitizers -100	20m 9s
linux clang system-test sanitizers 101- unstable	19m 50s
linux x86 gcc --disable-ssl	2m 29s
	3h 53m 42s

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