Database backend configuration #2607

Job	Run time
macOS [UBSAN] [lmdb \| clang]	42m 9s
Linux [UBSAN] [lmdb \| clang]	38m 37s
macOS [ASAN] [lmdb \| clang]	26m 40s
macOS [TSAN] [lmdb \| clang]	29m 12s
Linux [ASAN] [lmdb \| clang]	39m 0s
macOS [UBSAN] [rocksdb \| clang]	42m 56s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	43m 26s
macOS [ASAN] [rocksdb \| clang]	41m 0s
Linux [TSAN] [lmdb \| clang]	41m 0s
Linux [LEAK] [lmdb \| clang]	38m 40s
macOS [TSAN] [rocksdb \| clang]	54m 27s
Linux [UBSAN] [rocksdb \| clang]	48m 43s
Linux [ASAN] [rocksdb \| clang]	54m 14s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	54m 27s
Linux [LEAK] [rocksdb \| clang]	54m 53s
	10h 49m 24s

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