Revert "AMBARI-2620. Weak database passwords cause Hive fail to start. (Diego Pereira Domingos via srimanth)"

This reverts commit aa4b88fed9bfc7ab0fa70c78488e4b40c46aae7c.
AMBARI-3589. Common storage for different wizards. (onechiporenko)
AMBARI-3592. Reassign Master(secure cluster): Display principal and keytab path creation as a required manual step. (akovalenko)
AMBARI-3591. Fix for JMX not throwing exception when HostComponent is not found.
AMBARI-3590. Hive MetaStore start fails due to JDBC connection check failing (Vitaly Brodetskyi  via dlysnichenko)
AMBARI-3594: Service reconfiguration fails for multiple services. (jaimin)
AMBARI-3593 Ambari ui works incorrect when we delete host which has last slave component on the cluster
AMBARI-3597. Services API call takes ~20s to respond (odiachenko)
AMBARI-3598. ambari-server help should add a line explaining how to get the help for options. (Dmytro Shkvyra via odiachenko)
AMBARI-3599. MySQL install has error but task completes successfully (Dmytro Shkvyra via dlysnichenko)
AMBARI-3602. Reassign wizard: Show a confirmation popup for continuing ahead after the manual command step. (akovalenko)
AMBARI-3603. Reassign Master: Links to the wizard are disabled when respective component service is stopped. (akovalenko)
AMBARI-3605. Hive client installation failed on configured for Ambari server HTTPS (Vitaly Brodetskyi via dlysnichenko)
AMBARI-3607. Ambari-Client create unit tests for methods of ambariClient class. (Andrew Onischuk via mahadev)
AMBARI-3532: Reassign Master: Manual command does not display customized hdfs user name. (jaimin)
AMBARI-3612. Support for client component to report status with configs (dsen)
AMBARI-3604 - Components in API should have 'category' field
AMBARI-3583 - Requests API should rollup tasks information
AMBARI-3613. Enable HA wizard loads after sign in (alexantonenko)
AMBARI-3614. Remove unnecessary or unused cluster statuses. (alexantonenko)