Redis: Support auth command #62

Job	Run time
clang-compile-with-bazel	13m 51s
clang-compile-with-bazel-all-options	16m 24s
clang-compile-with-cmake	2m 54s
clang-compile-with-cmake-all-options	5m 1s
clang-compile-with-make	2m 37s
clang-compile-with-make-all-options	4m 49s
clang-unittest	11m 50s
gcc-compile-with-bazel	16m 18s
gcc-compile-with-bazel-all-options	18m 50s
gcc-compile-with-cmake	3m 17s
gcc-compile-with-cmake-all-options	5m 29s
gcc-compile-with-make	2m 46s
gcc-compile-with-make-all-options	4m 31s
	1h 48m 37s

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