Revert "AMBARI-4851. The DataNode directory perm issues should be 750 not 755.(vbrodetskyi)"

This reverts commit 79ff159d03111752a847548ee124fc706eabb6dd.

ambari-server/src/main/resources/stacks/HDP/2.0.6/services/HDFS/package/scripts/hdfs_datanode.py

@@ -32,7 +32,7 @@ def datanode(action=None):
     for data_dir in params.dfs_data_dir.split(","):
       Directory(data_dir,
                 recursive=True,
-                mode=0750,
+                mode=0755,
                 owner=params.hdfs_user,
                 group=params.user_group)
 

ambari-server/src/test/python/stacks/2.0.6/HDFS/test_datanode.py

@@ -141,7 +141,7 @@ class TestDatanode(RMFTestCase):
     self.assertResourceCalled('Directory', '/hadoop/hdfs/data',
                               owner = 'hdfs',
                               group = 'hadoop',
-                              mode = 0750,
+                              mode = 0755,
                               recursive = True,
                               )
 
@@ -155,6 +155,6 @@ class TestDatanode(RMFTestCase):
     self.assertResourceCalled('Directory', '/hadoop/hdfs/data',
                               owner = 'hdfs',
                               group = 'hadoop',
-                              mode = 0750,
+                              mode = 0755,
                               recursive = True,
                               )