AMBARI-16041 "Proxy user group" has override button on the ASW. (ababiichuk)

ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/configuration/hadoop-env.xml

@@ -171,6 +171,7 @@
     <description>Proxy user group.</description>
     <value-attributes>
       <type>user</type>
+      <overridable>false</overridable>
     </value-attributes>
   </property>
   <property>

ambari-server/src/main/resources/stacks/BIGTOP/0.8/services/HDFS/configuration/hadoop-env.xml

@@ -79,6 +79,7 @@
     <description>Proxy user group.</description>
     <value-attributes>
       <type>user</type>
+      <overridable>false</overridable>
     </value-attributes>
   </property>
   <property>

ambari-server/src/main/resources/stacks/HDP/2.0.6.GlusterFS/services/GLUSTERFS/configuration/hadoop-env.xml

@@ -61,6 +61,9 @@
     <display-name>Proxy User Group</display-name>
     <value>users</value>
     <description>Proxy user group.</description>
+    <value-attributes>
+      <overridable>false</overridable>
+    </value-attributes>
   </property>
   <property>
     <name>hdfs_user</name>

ambari-server/src/main/resources/stacks/HDP/2.1.GlusterFS/services/GLUSTERFS/configuration/hadoop-env.xml

@@ -87,6 +87,9 @@
     <display-name>Proxy User Group</display-name>
     <value>users</value>
     <description>Proxy user group.</description>
+    <value-attributes>
+      <overridable>false</overridable>
+    </value-attributes>
   </property>
   <property>
     <name>hdfs_user</name>

ambari-server/src/main/resources/stacks/HDP/2.3.ECS/services/ECS/configuration/hadoop-env.xml

@@ -33,6 +33,7 @@
     <description>Proxy user group.</description>
     <value-attributes>
       <type>user</type>
+      <overridable>false</overridable>
     </value-attributes>
   </property>
   <property>

ambari-server/src/main/resources/stacks/HDP/2.3.GlusterFS/services/GLUSTERFS/configuration/hadoop-env.xml

@@ -87,6 +87,9 @@
     <display-name>Proxy User Group</display-name>
     <value>users</value>
     <description>Proxy user group.</description>
+    <value-attributes>
+      <overridable>false</overridable>
+    </value-attributes>
   </property>
   <property>
     <name>hdfs_user</name>

ambari-server/src/test/resources/stacks/HDP/0.2/services/HDFS/configuration/hadoop-env.xml

@@ -71,6 +71,9 @@
     <display-name>Proxy User Group</display-name>
     <value>users</value>
     <description>Proxy user group.</description>
+    <value-attributes>
+      <overridable>false</overridable>
+    </value-attributes>
   </property>
   <property>
     <name>security_enabled</name>

ambari-server/src/test/resources/stacks_with_common_services/HDP/0.2/services/HDFS/configuration/hadoop-env.xml

@@ -71,6 +71,9 @@
     <display-name>Proxy User Group</display-name>
     <value>users</value>
     <description>Proxy user group.</description>
+    <value-attributes>
+      <overridable>false</overridable>
+    </value-attributes>
   </property>
   <property>
     <name>security_enabled</name>