Removes and/or replaces all mentions of py27.

Cleans up obsolete requirements and their lower-constraints.

Update cliff minimum to 3.1.0 in requirements.txt, which has a fix for
story 2005891.

Change-Id: I52cffa2f1aee944f79c4618ea20b779755792f2a

Kayobe generates passwords.yml for Kolla Ansible, and can encrypt it
using the vault password. Previously this was failing on Python 3 due to
passing a string to file.write() which expects bytes.

This change fixes the issue by encoding the password string passed to
file.write().

This allows us to run the ansible role tests under Python 3.

Change-Id: I33813f79984a46f1967ef3aee455dcfbe7eb93da
Story: 2006574
Task: 39481

Use the modern variable in the documented example.

Change-Id: I24560bf22cea28c1afc488c9abf9ea421a0286ad

We can use the Ansible pip module's support for specifying a list of
packages with version constraints.

Change-Id: If5d3c7117175732c54e38025692eb4c036053ebc

Sync with kolla-ansible multinode inventory.

Change-Id: I30bd5286c4783fce544c41e726efc5f800d6f56a

* Change default seed VM image to CentOS 8
* Change default bifrost deploy image to CentOS 8
* Workaround DIB bug
  https://bugs.launchpad.net/diskimage-builder/+bug/1866847 by setting
  DIB_DISABLE_KERNEL_CLEANUP to 1
* Install iptables on seed for SNAT - missing on CentOS 8
* Fix provider network MTU lookup for empty string
* Bump stackhpc.libvirt-host to 1.7.0 for CentOS 8 support
* Bump stackhpc.libvirt-vm to 1.13.0 for CentOS 8 support
* Bump jriguera.configdrive for Python 3 support

Change-Id: Ie0edf6a924a914395c6502e2d5cf1139bce14a48
Story: 2006574
Task: 39000

Some Ruckus switches, e.g. the Ruckus ICX 7150, advertise switch
interface names as switch port descriptions. Unlike Dell switches, there
is no space character between port type and port number. For example:
GigabitEthernet1/1/9.

Update regular expression to match both styles.

Change-Id: I359b07abadc8665ff0a8c3407ca0fc5effc504cf
Story: 2007532
Task: 39343

The seed VM will fail to provision if the Ansible control host and the
seed hypervisor are not the same hosts.

This is because Kayobe creates the seed-vm-user-data file on the
seed-hypervisor host. It then invokes the jriguera.configdrive role
which uses a copy task without remote_src, which fails to find the
source file locally on the Ansible control host.

Instead we create a local temporary file for seed VM user data.

Change-Id: Iabbe4c624b9ad02bb82c323070f99c16e5822966
Story: 2007530
Task: 39338

Kolla Ansible sets kolla_{external,internal}_fqdn_cacert variables with
default values compatible with the use of `kolla-ansible certificates`.

However, when these variables are left unset in Kayobe, which is
generally the case when using trusted certificates, we end up with
openrc files setting OS_CACERT to a file that does not exist:

    ${KOLLA_CONFIG_PATH}/certificates/haproxy-ca.crt

Instead we allow null cacert variables to be passed to kolla-ansible,
which results in openrc files without the bogus OS_CACERT entry.

Change-Id: Ifa615888b6d8d54c9e6314fd90f3fc4872fc6e5a
Story: 2007516
Task: 39299

Now that py2 is gone, oslotest dropped dependency on mock and will
soon affect Ussuri CI [1], let's use unittest.mock built in py3.

This also fixes py38 jobs and proactively prevents py36 and py37
failing due to [1]. This is because we never included mock in
test-requirements and instead relied on oslotest to bring it in.

[1] https://review.opendev.org/716322

Change-Id: I0c18b13c4e1fbaa9db41da4e2039ad908c28caa6

Since Kayobe is now an official OpenStack deliverable, our releases
documentation page is now outdated. It needs to be updated to document
the process using official release tools.

This change makes the releases page more similar to the Kolla release
management page:
https://docs.openstack.org/kolla/latest/contributor/release-management.html.

Change-Id: Ic49a63d66dfdb8e4235a60c1f01ad70bef6bea43
Story: 2007079
Task: 37990

Detect current branch from .gitreview and use upper constraints to
install python-openstackclient, to guarantee compatibility with the
Python version in use.

Change-Id: Ie44508fe3d3b08190afa5a43748e43548a63ff82

There is no activity on the resmo fork of the role and it seems
impossible to get any patches merged.

Change-Id: I1f09f7c11767226e89b34687dab1553e87be76ba
Story: 2005272
Task: 39197

Using become for all Kolla Ansible tasks is not ideal from a security
perspective. It is also incompatible with fact caching, since it causes
facts to be gathered and cached as root, which changes some facts.

This change modifies the default value of kolla_ansible_become to false.

Change-Id: I9ee5c55e59276f70c92e9c698c01123dcf8919a1
Story: 2007492
Task: 39217

This is a minimal fix to support loading dashboards into the Monasca
Grafana fork. It firstly aligns the default Monasca Grafana control
plane organisation and Monasca Grafana local admin username with Kolla
Ansible to make the feature easier to use. Secondly, it extracts the
associated OpenStack project name from this variable by stripping off
the OpenStack domain.

Longer term we may wish to move the dashboard loading functionality into
Kolla Ansible, now that it supports deploying Monasca.

Affects Rocky onwards.

Change-Id: I77c94edf654565a12ce8be681e3c9b16caa55c86
Story: 2007477
Task: 39186

Implemented via 'kolla-ansible stop'.

Change-Id: Iaf8db47e70f023b446c17aa61fc8bb89cf7c2b28
Story: 2007467
Task: 39155

Kolla CentOS 8 Train Bifrost image is now available.

Change-Id: If2b06f80fa2817377ed881aa61ef73e4be38df55
Story: 2006574
Task: 39047

Missing bifrost image for Train, so no seed upgrade job yet.

Depends-On: https://review.opendev.org/711067

Change-Id: I0e88683f775769c1a80879685b0e7a2983599b08
Story: 2006574
Task: 39047

Adds support for configuration of DNF repo mirrors for CentOS and EPEL
repositories, as well as custom repositories.

Adds support for DNF automatic, which is a replacement for yum-cron.

Configuration is backwards compatible, falling back to the equivalent
yum variables when DNF variables have not been overridden.

Change-Id: I8bef5e9c8e1c77c25d6077ff690da8f2cde6a643
Story: 2006574
Task: 38922