tests: ovsdb-server: Fix config-file same schema test. #2032

Job	Run time
osx clang --disable-ssl	3m 49s
linux rpm fedora	5m 2s
dpdk gcc	9s
linux deb no dpdk	11m 28s
clang-analyze	17m 35s
linux gcc --disable-ssl	2m 23s
linux clang --disable-ssl	4m 2s
linux gcc c99	2m 39s
linux clang c99	2m 25s
linux gcc test	7m 57s
linux clang address,undefined test	15m 49s
linux gcc test --enable-shared	10m 58s
linux clang test --enable-shared	11m 14s
linux gcc check check-dpdk dpdk	16m 50s
linux clang check check-dpdk dpdk	16m 43s
linux gcc test -ljemalloc	8m 32s
linux clang test -ljemalloc	8m 37s
linux gcc --enable-afxdp	2m 19s
linux clang --enable-afxdp	2m 21s
linux gcc dpdk --enable-shared	3m 21s
linux clang dpdk --enable-shared	3m 25s
linux gcc dpdk-shared	2m 43s
linux clang dpdk-shared	2m 50s
linux gcc dpdk-shared --enable-shared	3m 23s
linux clang dpdk-shared --enable-shared	3m 25s
linux gcc m32 --disable-ssl	2m 29s
linux gcc check-ovsdb-cluster	6m 12s
linux gcc check-kernel -100	8m 40s
linux gcc check-kernel 100-	8m 51s
linux clang address,undefined check-kernel -100	11m 10s
linux clang address,undefined check-kernel 100-	11m 20s
linux gcc check-offloads -100	10m 57s
linux gcc check-offloads 100-	6m 56s
linux gcc dpdk check-system-userspace	10m 40s
linux clang address,undefined dpdk check-system-userspace	13m 28s
linux gcc dpdk check-system-tso	10m 22s
linux gcc dpdk check-afxdp	10m 48s
	4h 41m 52s

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