[9.2] improve ceph update procedure

[Denis Meltsaykin]

Since we obtain updated ceph packages earlier than do the real ceph update, there is a small chance that a service restart occurs before the correct update but having new packages. This can lead to a huge rebalance of the ceph cluster and might cause data loss. We need to improve this procedure in order to decrease the data loss probability.

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

Fix proposed to branch: stable/9.2
Change author: Alexey Stupnikov <email address hidden>
Review: https://review.fuel-infra.org/35628

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

Reviewed: https://review.fuel-infra.org/35628
Submitter: Olena Logvinova <email address hidden>
Branch: stable/9.2

Commit: 8be814a372e1fc589cda57ebba3fa725b2cd0d99
Author: Alexey Stupnikov <email address hidden>
Date: Wed Jun 14 17:28:19 2017

Improve 9.2 update process

Our documentation contain suboptimal update step sequence:
specific ceph packages are updated after all installed packages
were updated on slave nodes.

Another issue is late ceph restart that could lead to a broken
ceph cluster if customer will accidently restart node to solve
other update issues.

I have moved update ceph step earlier and changed the command to
restart ceph services right after package update.

Change-Id: Ib44e10256c41a2b182b80c8a3d8709af8454c47f
Closes-bug: #1661260

[Alexey Stupnikov (astupnikov)]

QA team: this fix doesn't contain code to be released, so please test the instruction on Fuel9.1 deployment with ceph and remove 9.2-mu2 nomination if everything will work as it should.

[Ilya Bumarskov (ibumarskov)]

New update procedure doesn't work because new ubuntu repositories will not added before step "Update the environment: fuel2 update --env <ENV_ID> install --repos mos9.2-updates"

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

Fix proposed to branch: 9.0/mitaka
Change author: Alexey Stupnikov <email address hidden>
Review: https://review.fuel-infra.org/35727

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

Fix proposed to branch: stable/9.2
Change author: Alexey Stupnikov <email address hidden>
Review: https://review.fuel-infra.org/35728

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

Reviewed: https://review.fuel-infra.org/35727
Submitter: Pkgs Jenkins <email address hidden>
Branch: 9.0/mitaka

Commit: a50834082edabfba7bda9b6c3a00cdfd3ade84bc
Author: Alexey Stupnikov <email address hidden>
Date: Wed Jun 21 18:13:31 2017

Improve mos9.2-updates repo integration

Changed ceph update procedure to improve support of provided repo
with new packages. Here is a list of changes:

- Configured default repo with updated packages (mos9.2-updates).
- Added a separate play to remove added repo (if it was configured
  and added).

Change-Id: Id65c2bc7661058a80ec9be020109ce5bd2293344
Partial-bug: #1661260

[Alexey Stupnikov (astupnikov)]

QA team: please test mos-updates package with https://review.fuel-infra.org/#/c/35728/ mos-docs fix

[Ilya Bumarskov (ibumarskov)]

Done. New procedure works.

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

Reviewed: https://review.fuel-infra.org/35728
Submitter: Olena Logvinova <email address hidden>
Branch: stable/9.2

Commit: 125111dd41277b925c27a04dacb57f0a80d408c1
Author: Alexey Stupnikov <email address hidden>
Date: Wed Jun 21 18:19:06 2017

Use mos9.2-updates repo during ceph update

We have to use additional repo during ceph update process, since
we haven't got correct sources configuration at this step.

Change-Id: I3a98461b6907654a1d57d0205a28d32637f67ec7
Closes-bug: #1661260

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/482084

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/482084
Committed: https://git.openstack.org/cgit/openstack/fuel-qa/commit/?id=463b97563e2e5e28b1500eb3c80ec4d0477dfea7
Submitter: Jenkins
Branch: stable/mitaka

commit 463b97563e2e5e28b1500eb3c80ec4d0477dfea7
Author: ibumarskov <email address hidden>
Date: Mon Jul 10 14:01:00 2017 +0400

    Update procedure was changed (9.x)

    Sequence of update procedure was changed. Step with update ceph was
    moved before step 'update cluster'.
    Change-Id: Ie26b913d3a5a5eba2c8ae0ae6e9143de28fadb5b
    Related-bug: #1661260