Merge pull request #7591 from 31z4/zookeeper

Update Zookeeper to 3.5.7

library/zookeeper

@@ -6,7 +6,7 @@ Architectures: amd64
 GitCommit: 1ed5af662e6749021687fbf2a9b445b1adf2fb46
 Directory: 3.4.14
 
-Tags: 3.5.6, 3.5, latest
+Tags: 3.5.7, 3.5, latest
 Architectures: amd64
-GitCommit: 1ed5af662e6749021687fbf2a9b445b1adf2fb46
-Directory: 3.5.6
+GitCommit: 6b7a8a55d9760f9737b03366e1b3b7edbe0bd895
+Directory: 3.5.7