After DOR test on AIO-DX, alarm for CPU level above 90% was not cleared for more than 5 mins

Bug Description : After the DOR test CPU level for both controller is going above 90% . Standby controller (controller-0) CPU level was not cleared for longer time more than 5mins. This was observed AIO-duplex system .

: Executing command...
[2018-10-09 21:10:29,207] 262 DEBUG MainThread ssh.send :: Send 'fm --os-username 'admin' --os-password 'Li69nux*' --os-project-name admin --os-auth-url http://192.168.204.2:5000/v3 --os-user-domain-name Default --os-project-domain-name Default --os-endpoint-type internalURL --os-region-name RegionOne alarm-list --nowrap --uuid'
[2018-10-09 21:10:30,628] 382 DEBUG MainThread ssh.expect :: Output:
+--------------------------------------+----------+--------------------------------------------------+-------------------+----------+----------------------------+
| UUID | Alarm ID | Reason Text | Entity ID | Severity | Time Stamp |
+--------------------------------------+----------+--------------------------------------------------+-------------------+----------+----------------------------+
| 84bc0544-9074-42e5-817b-35342b35c3b8 | 100.101 | Platform CPU threshold exceeded; 95%, actual 95% | host=controller-1 | critical | 2018-10-09T21:08:52.881034 |
| 6d631cbd-fa20-4e73-84ed-077b8dbf1863 | 100.101 | Platform CPU threshold exceeded; 95%, actual 97% | host=controller-0 | critical | 2018-10-09T20:41:01.853283 |
+--------------------------------------+----------+--------------------------------------------------+-------------------+----------+----------------------------+
controller-1:~$

[2018-10-09 21:14:24,098] 419 DEBUG MainThread ssh.exec_cmd:: Executing command...
[2018-10-09 21:14:24,098] 262 DEBUG MainThread ssh.send :: Send 'fm --os-username 'admin' --os-password 'Li69nux*' --os-project-name admin --os-auth-url http://192.168.204.2:5000/v3 --os-user-domain-name Default --os-project-domain-name Default --os-endpoint-type internalURL --os-region-name RegionOne alarm-list --nowrap --uuid'
[2018-10-09 21:14:25,684] 382 DEBUG MainThread ssh.expect :: Output:
+--------------------------------------+----------+--------------------------------------------------+-------------------+----------+----------------------------+
| UUID | Alarm ID | Reason Text | Entity ID | Severity | Time Stamp |
+--------------------------------------+----------+--------------------------------------------------+-------------------+----------+----------------------------+
| 6d631cbd-fa20-4e73-84ed-077b8dbf1863 | 100.101 | Platform CPU threshold exceeded; 95%, actual 97% | host=controller-0 | critical | 2018-10-09T20:41:01.853283 |
+--------------------------------------+----------+--------------------------------------------------+-------------------+----------+----------------------------+
controller-1:~$

Severity
--------
Major

Steps to Reproduce
------------------
1. Launch VMs
2. Power off all the hosts
3. Power on all the hosts
4. Wait for all the hosts to enabled active
5. Verify alarms . CPU for both controller was 90-95%
6. Controller-0 alarm was not cleared for CPU level for more than 5 mins
Expected Behavior
------------------
Alarm clearing with in 5mins .

Actual Behavior
----------------
As per description

Reproducibility
---------------
50% reproducible . Alarm is not clearing within 5 minutes

System Configuration
--------------------
Duplex system

Branch/Pull Time/Commit
-----------------------
2018-10-08_01-52-01

Timestamp/Logs
--------------
2018-10-09 21:10:29,207