Revert "ensure not syncredis"

This reverts commit 9fdccac20a10958b59fa1ec9ab9dc79a943b1050.
Revert "if slave to gc, trick haredis to believe it is the lc master"

This reverts commit ae7a8c0f681351325ce4c7235beb60a3c36d3e6f.
Revert "uses gc by default instead of no one"

This reverts commit e4bd7e7be503d1f4ea6913aa5f5f2ad28a21cfcd.
Revert "overrideable master redis config"

This reverts commit 79570df31688c33b0e9200416edd4d17070fad51.