AMBARI-14091. Postgres DB Test connection for Ranger DBA user does not work. (jaimin)

ambari-server/src/main/resources/stacks/HDP/2.3/services/stack_advisor.py

@@ -442,7 +442,7 @@ class HDP23StackAdvisor(HDP22StackAdvisor):
         ranger_db_privelege_url_dict = {
           'MYSQL': {'ranger_privelege_user_jdbc_url': 'jdbc:mysql://' + rangerDbHost},
           'ORACLE': {'ranger_privelege_user_jdbc_url': 'jdbc:oracle:thin:@//' + rangerDbHost + ':1521'},
-          'POSTGRES': {'ranger_privelege_user_jdbc_url': 'jdbc:postgresql://' + rangerDbHost + ':5432'},
+          'POSTGRES': {'ranger_privelege_user_jdbc_url': 'jdbc:postgresql://' + rangerDbHost + ':5432/postgres'},
           'MSSQL': {'ranger_privelege_user_jdbc_url': 'jdbc:sqlserver://' + rangerDbHost + ';'},
           'SQLA': {'ranger_privelege_user_jdbc_url': 'jdbc:sqlanywhere:host=' + rangerDbHost + ';'}
         }