Since virtualenv 20.0 (amongst other changes) six version >1.12.0 is required.
This change adds upgrade of virtualenv and six in pre - to be reverted once
infra CentOS images are sorted out.

Change-Id: I0ca0347bb6ebc5d8f5d22f708211e01221165262

Also better organise the 'tips and tricks' section.

Change-Id: If20a89ae93b64b5a1b5895bb9dc73c4e70adaba7
Related-Bug: #1862649

By default api_interface is set to public, masakari-monitor
on compute nodes should communicate via the internal API to
reach masakari-api.

Change-Id: I454f44e57d7b17d93d4aefc4cbbed93aefe874b1
Closes-Bug: #1858431

Kolla-Ansible Ceph deployment mechanism has been deprecated in Train [1].

This change removes the Ansible code and associated CI jobs.

[1]: https://review.opendev.org/669214

Change-Id: Ie2167f02ad2f525d3b0f553e2c047516acf55bc2

Ports need physical-network to be set for a flat network, otherwise they
will not bind.

Closes-Bug: #1862628
Change-Id: I9d579b4317a8acbc3e51bbd9c0236846b75d598b

Change-Id: I507ebba82227e5f4567de6f5a0cb76f8ee46b2e3
Closes-Bug: #1862393

Zuul handles jobs updates just fine, no need to run k-a jobs
when touching zuul.d for different reasons.

Change-Id: I4e4dd1ff26ff46c47c84a9c144d9c91ae3e93a04

Backport: train

* Ironic dropped CoreOS IPA images in Train - use CentOS DIB images
* Nova flavor requires dropping standard resources
* Link to sections in ironic docs

Change-Id: Id65ada7cd6766d3a907a5a1da54978b56319979c

Change-Id: Ia122aa157413e71eb50bd22e3c9f44a2e5c0bf4f

to clean old keys on merge.

Change-Id: Ifcc99e7c737707eea9e951db066dc94fd85bd9f7

Change-Id: Ib92607d5b5804e6fb166d9c2b20a803e130cb268

Adds new CI job definitions for CentOS 8:

- kolla-ansible-centos8-source
- kolla-ansible-centos8-binary
- kolla-ansible-centos8-source-ceph-ansible
- kolla-ansible-centos8-source-cinder-lvm
- kolla-ansible-centos8-source-mariadb
- kolla-ansible-centos8-source-bifrost
- kolla-ansible-centos8-source-zun
- kolla-ansible-centos8-source-swift
- kolla-ansible-centos8-source-scenario-nfv
- kolla-ansible-centos8-source-ironic
- kolla-ansible-centos8-binary-ironic
- kolla-ansible-centos8-source-masakari
- kolla-ansible-centos8-source-cells

The following jobs are added to the check pipeline:

- kolla-ansible-centos8-source
- kolla-ansible-centos8-binary
- kolla-ansible-centos8-source-cinder-lvm
- kolla-ansible-centos8-source-mariadb
- kolla-ansible-centos8-source-zun
- kolla-ansible-centos8-source-swift
- kolla-ansible-centos8-source-scenario-nfv
- kolla-ansible-centos8-source-ironic
- kolla-ansible-centos8-binary-ironic
- kolla-ansible-centos8-source-cells

The following jobs are not yet passing so are not added to the check
pipeline:

- kolla-ansible-centos8-source-ceph-ansible
- kolla-ansible-centos8-source-bifrost
- kolla-ansible-centos8-source-masakari

The kolla-ansible-centos8-source job is added to the gate.

Upgrade jobs will be added when CentOS 8 support exists in Train.

Depends-On: https://review.opendev.org/704337
Depends-On: https://review.opendev.org/704848
Depends-On: https://review.opendev.org/704965



Co-Authored-By: Mark Goddard <mark@stackhpc.com>

Change-Id: Ibd806feee71721b122b77d7eff33228ca1cc2853
Partially-Implements: blueprint centos-rhel-8

As discussed during the meeting. [1]

[1] http://eavesdrop.openstack.org/meetings/kolla/2020/kolla.2020-02-05-15.00.html

Change-Id: I339fc7f01f640a32ff35d19ded54b6f8e2fdec15

Change-Id: Ifc87adbac6bef0aaab2ad0e80739654b3e3123ad

There are cases when a multinode deployment ends up in unusable
keystone public wsgi on some nodes.

The root cause is that keystone public wsgi doesn't find fernet
keys on startup - and then persists on sending 500 errors to any
requests - due to a race condition between
fernet_setup/fernet-push.sh and keystone startup.

Depends-On: https://review.opendev.org/703742/
Change-Id: I63709c2e3f6a893db82a05640da78f492bf8440f
Closes-Bug: #1846789

This fixes issues reported by Mark:
- possible failure with 4-node cluster (however unlikely)
- failure to stop all nodes from progressing when conditions are
  not valid (due to: "any_errors_fatal: False")

Change-Id: Ib6995bf4c99202c9813859b3d9e2f420448f0445