connmgr: Fix ofconn configuration on vswitchd startup. #1875

Job	Run time
osx clang --disable-ssl	4m 13s
linux gcc --disable-ssl	3m 59s
linux clang --disable-ssl	3m 12s
linux gcc c99	4m 6s
linux clang c99	4m 0s
linux gcc test 3.16	11m 10s
linux clang test 3.16 asan	23m 32s
linux gcc test --enable-shared	18m 10s
linux clang test --enable-shared	14m 7s
linux gcc test dpdk	22m 13s
linux clang test dpdk	21m 11s
linux gcc test -ljemalloc	10m 30s
linux clang test -ljemalloc	12m 4s
linux gcc 5.8 5.5 5.4 4.19	7m 33s
linux clang 5.8 5.5 5.4 4.19	8m 9s
linux gcc 4.14 4.9 4.4 3.16	6m 12s
linux clang 4.14 4.9 4.4 3.16	6m 32s
linux gcc afxdp 5.3	4m 32s
linux clang afxdp 5.3	5m 25s
linux gcc dpdk --enable-shared	16m 0s
linux clang dpdk --enable-shared	19m 48s
linux gcc dpdk-shared	14m 43s
linux clang dpdk-shared	14m 33s
linux gcc dpdk-shared --enable-shared	15m 22s
linux clang dpdk-shared --enable-shared	21m 22s
linux gcc m32 --disable-ssl	3m 31s
linux gcc deb	8m 1s
	5h 4m 10s

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