ovsdb: Abort schema conversion before election timer expires. #5316

Job	Run time
dpdk gcc	9s
osx clang --disable-ssl	4m 23s
linux deb no dpdk	6m 3s
linux rpm fedora	4m 39s
linux gcc --disable-ssl	2m 6s
linux clang --disable-ssl	2m 22s
linux gcc c99	2m 4s
linux clang c99	2m 7s
linux gcc test	6m 20s
linux clang test asan	10m 54s
linux clang test ubsan	7m 20s
linux gcc test --enable-shared	8m 49s
linux clang test --enable-shared	8m 36s
linux gcc check check-dpdk dpdk	13m 51s
linux clang check check-dpdk dpdk	13m 41s
linux gcc test -ljemalloc	6m 55s
linux clang test -ljemalloc	6m 50s
linux gcc --enable-afxdp	2m 3s
linux clang --enable-afxdp	2m 4s
linux gcc dpdk --enable-shared	3m 8s
linux clang dpdk --enable-shared	2m 50s
linux gcc dpdk-shared	2m 26s
linux clang dpdk-shared	2m 19s
linux gcc dpdk-shared --enable-shared	2m 58s
linux clang dpdk-shared --enable-shared	3m 0s
linux gcc m32 --disable-ssl	2m 16s
	2h 10m 13s

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