AMBARI-6999. Admin View: add description to admin view static instance.

ambari-admin/src/main/resources/view.xml

@@ -21,5 +21,6 @@ limitations under the License. Kerberos, LDAP, Custom. Binary/Htt
   <instance>
     <name>INSTANCE</name>
     <visible>false</visible>
+    <description>This view provides administration capabilities for Ambari</description>
   </instance>
 </view>