Frontier scan client #2366

Job	Run time
Linux [UBSAN] [lmdb \| clang]	43m 30s
macOS [UBSAN] [lmdb \| clang]	33m 39s
Linux [ASAN] [lmdb \| clang]	42m 51s
macOS [ASAN] [lmdb \| clang]	29m 57s
macOS [TSAN] [lmdb \| clang]	32m 52s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	42m 22s
macOS [UBSAN] [rocksdb \| clang]	43m 24s
Linux [TSAN] [lmdb \| clang]	44m 45s
macOS [ASAN] [rocksdb \| clang]	38m 46s
Linux [LEAK] [lmdb \| clang]	41m 39s
Linux [UBSAN] [rocksdb \| clang]	54m 30s
macOS [TSAN] [rocksdb \| clang]	50m 42s
Linux [ASAN] [rocksdb \| clang]	59m 49s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	58m 8s
Linux [LEAK] [rocksdb \| clang]	59m 0s
	11h 15m 54s

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