Correct instructions for updating openstack.yaml file

[Deepti Ramakrishna]

The page at https://docs.mirantis.com/openstack/fuel/fuel-8.0/file-ref.html#openstack-yaml-ref gives instructions on editing openstack.yaml file and re-syncing a deployment. The steps listed are:

1. dockerctl shell nailgun
2. Edit file.
3. manage.py dropdb && manage.py syncdb && manage.py loaddefault
4. killall nailgund
5. exit
6. fuel rel --sync-deployment-tasks --dir /etc/puppet

However step #3 hangs before timing out and printing a "deadlock" message for the dropdb operation. (I was using Fuel with virtualbox). Cleaning and restarting Fuel takes more than half an hour, so it is frustrating when it doesn't work. After some search, I came across https://bugs.launchpad.net/fuel/+bug/1483195 which lists a workaround/fix. Namely, replace step #3 and step #4 with:

$ supervisorctl stop all
$ manage.py dropdb && manage.py syncdb && manage.py loaddefault
$ supervisorctl start all

This worked for me. To prevent other Fuel developers from wasting time on this, may I request that the documentation at the link listed above be updated with the new steps.

[Oleksiy Molchanov (omolchanov)]

Python team, if it is okay to replace steps described above, please pass this to fuel-doc.

[Andrew Woodward (xarses)]

This is correct for versions 8 and prior, but is not correct for 9 and above

[Dmitry Pyzhov (dpyzhov)]

Yes, change is corect, docs team please update the instruction. For 9.0 please remove first step 'dockerctl ...'.

[Fuel Devops McRobotson (fuel-devops-robot)]

Fix proposed to branch: master
Change author: Evgeny Konstantinov <email address hidden>
Review: https://review.fuel-infra.org/19238

[Fuel Devops McRobotson (fuel-devops-robot)]

Change abandoned by Olga Gusarenko <email address hidden> on branch: master
Review: https://review.fuel-infra.org/19238