python: ovs: flow: Add meter_id to controller. #2028

Job	Run time
osx clang --disable-ssl	3m 6s
linux deb no dpdk	4m 40s
linux deb shared dpdk	7m 33s
linux gcc --disable-ssl	2m 0s
linux clang --disable-ssl	2m 20s
linux gcc c99	2m 43s
linux clang c99	2m 8s
linux gcc test	6m 57s
linux clang test asan	11m 52s
linux clang test ubsan	8m 17s
linux gcc test --enable-shared	10m 1s
linux clang test --enable-shared	10m 7s
linux gcc test dpdk	7m 45s
linux clang test dpdk	7m 29s
linux gcc test -ljemalloc	7m 22s
linux clang test -ljemalloc	7m 38s
linux gcc afxdp 5.4	3m 31s
linux clang afxdp 5.4	2m 51s
linux gcc dpdk --enable-shared	3m 13s
linux clang dpdk --enable-shared	3m 17s
linux gcc dpdk-shared	2m 30s
linux clang dpdk-shared	2m 19s
linux gcc dpdk-shared --enable-shared	3m 3s
linux clang dpdk-shared --enable-shared	2m 59s
linux gcc m32 --disable-ssl	2m 5s
	2h 7m 46s

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