Frontier scan client #2291

Job	Run time
Linux [UBSAN] [lmdb \| clang]	42m 15s
Linux [ASAN] [lmdb \| clang]	39m 50s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	40m 11s
Linux [TSAN] [lmdb \| clang]	44m 40s
Linux [LEAK] [lmdb \| clang] (Errors Ignored)	41m 3s
Linux [UBSAN] [rocksdb \| clang]	57m 27s
macOS [UBSAN] [lmdb \| clang]	33m 57s
macOS [ASAN] [lmdb \| clang]	30m 40s
macOS [TSAN] [lmdb \| clang]	33m 47s
Linux [ASAN] [rocksdb \| clang]	56m 43s
macOS [UBSAN] [rocksdb \| clang]	42m 42s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	57m 53s
macOS [ASAN] [rocksdb \| clang]	40m 57s
Linux [LEAK] [rocksdb \| clang] (Errors Ignored)	58m 15s
macOS [TSAN] [rocksdb \| clang]	52m 48s
	11h 13m 8s

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