Backup and Restore: upon execution of 'controller_controller --restore-system' controller-0 was rebooted unexpectedly

[mhg]

Brief Description
-----------------
During system restore, when executing CLI 'sudo config_controller --restore-system <backup-files_system.tgz>', system output the following messages and rebooted:
[16%]ERROR:root:Failed to read platform.conf
...
*** Host watchdog (hostwd) not receiving messages from PMON ***
...
*** Initiating reboot ***

Severity
--------
Major

Steps to Reproduce
------------------
1 do system backup according to customer documents while do not backup any cinder volumes
      sudo config_controller --backup <output_backup_files>
    save the generated backup-files outside the lab under test

2 do system restore
   1) wipe disks on all nodes except the storage nodes
   2) power off all nodes except the storage nodes
   3) reinstall controller-0 with the same version system software
   4) restore the system data:
           sudo config_controller --restore-system <backup-file_system.tgz>

Expected Behavior
------------------
The CLI completes without any issues and system does not reboot.

Actual Behavior
----------------
The CLI output some error messages and rebooted the node when it almost finished all steps:
Restoring system (this will take several minutes):
Step 1 of 24 [# ] [4%]Step 2 of 24 [### ] [8%]Step 3 of 24 [##### ] [12%]Step 4 of 24 [####### ] [16%]ERROR:root:Failed to read platform.conf
Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/tsconfig/tsconfig.py", line 84, in _load
    value = str(config.get('platform_conf', 'subfunction'))
  File "/usr/lib64/python2.7/ConfigParser.py", line 618, in get
    raise NoOptionError(option, section)
NoOptionError: No option 'subfunction' in section: 'platform_conf'
INFO:controllerconfig.backup_restore:File config/server-cert.pem is not in archive.
INFO:controllerconfig.backup_restore:File config/iptables.rules is not in archive.
Step 5 of 24 [######### ] [20%]Step 6 of 24 [########### ] [25%]Step 7 of 24 [############# ] [29%]Step 8 of 24 [############### ] [33%]Step 9 of 24 [################ ] [37%]Step 10 of 24 [################## ] [41%]INFO:controllerconfig.backup_restore:File cinder/saveconfig.json is not in archive.
Step 11 of 24 [#################### ] [45%]Step 12 of 24 [###################### ] [50%]Step 13 of 24 [######################## ] [54%]Step 14 of 24 [########################## ] [58%]Step 15 of 24 [############################ ] [62%]Step 16 of 24 [############################## ] [66%]Step 17 of 24 [############################### ] [70%]Step 18 of 24 [################################# ] [75%]Step 19 of 24 [################################### ] [79%]Step 20 of 24 [##################################### ] [83%]INFO:controllerconfig.backup_restore:File patch-vault is not in archive.
INFO:controllerconfig.backup_restore:File config/ceph-config is not in archive.
Step 22 of 24 [######################################### ] [91%]Step 23 of 24 [########################################### ] [95%]*** Host watchdog (hostwd) not receiving messages from PMON ***
*** Host Watchdog declaring system unhealthy ***
*** Initiating reboot ***
*** Host watchdog (hostwd) not receiving messages from PMON ***
*** Host Watchdog declaring system unhealthy ***
*** Initiating reboot ***

Reproducibility
---------------
Reproducible

System Configuration
--------------------
Dedicated storage

Branch/Pull Time/Commit
-----------------------
master as of build-date-time
StarlingX_Upstream_build as of 2018-12-07_20-18-00

Timestamp/Logs
--------------
Thu Dec 13 18:07:23 UTC 2018

[mhg (marvinhg)]

Retest with a temporary code change to another but (https://bugs.launchpad.net/starlingx/+bug/1808417) on controller-0 with the same test steps, the problem did not happen.

So mark it duplicate to https://bugs.launchpad.net/starlingx/+bug/1808417.

[Ghada Khalil (gkhalil)]

Note: The fix for https://bugs.launchpad.net/starlingx/+bug/1808417 has been merged as of Dec 14
https://review.openstack.org/#/c/625127/