Remove old build targets from Azure test matrix

[mboersma]

What this PR does / why we need it:

In preparing to add Ubuntu 22.04 support to Azure Cluster API images, we realized that our PR test matrix is huge (up to 20 items, requiring 20 Azure VMs to be provisioned for each CI run). This mostly removes ubuntu-1804 and windows-2019 from that matrix, as they are both on the verge of being sunsetted.

Which issue(s) this PR fixes:

N/A

Additional context

See also #961

cc: @CecileRobertMichon @jackfrancis @jsturtevant @kkeshavamurthy

[mboersma]

/test pull-azure-sigs pull-azure-vhds

[mboersma]

/test pull-azure-sigs pull-azure-vhds

[mboersma]

/test pull-azure-sigs

[mboersma]

/hold cancel

[kkeshavamurthy]

Thanks @mboersma
/lgtm

[CecileRobertMichon]

/lgtm
/approve

[CecileRobertMichon]

/hold

there is an error in CI logs but I'm not sure if it's related to this PR

ERROR: Please run 'az login' to setup account.

[CecileRobertMichon]

/test pull-azure-sigs
/test pull-azure-vhds

[CecileRobertMichon]

there is an error in CI logs but I'm not sure if it's related to this PR

looks related, the same error occurs on re-runs, and it's not present in other PRs running the same job

[mboersma]

I was trying to define new variables by adding to existing variables in azure_targets.sh to make maintenance easier. But I didn't realize that the Makefile just uses grep on this file, so the variables weren't expanded. I did so manually.

[mboersma]

All passing as expected now, no az login or other errors.

[mboersma]

/hold cancel

[mboersma]

/retest pull-azure-sigs

Starting collection install process
Downloading https://galaxy.ansible.com/download/ansible-windows-1.11.1.tar.gz to /root/.ansible/tmp/ansible-local-89fxlxeeam/tmpnc7dwu6h/ansible-windows-1.11.1-kp8rxb7_
ERROR! Unexpected Exception, this is probably a bug: The read operation timed out

[k8s-ci-robot]

@mboersma: The /retest command does not accept any targets.
The following commands are available to trigger required jobs:

• /test json-sort-check
• /test pull-azure-vhds
• /test pull-goss-populate
• /test pull-ova-all
• /test pull-packer-validate

The following commands are available to trigger optional jobs:

• /test pull-azure-sigs
• /test pull-container-image-build
• /test pull-image-builder-gcp-all

Use /test all to run the following jobs that were automatically triggered:

• pull-azure-sigs
• pull-azure-vhds

In response to this:

/retest pull-azure-sigs

Starting collection install process
Downloading https://galaxy.ansible.com/download/ansible-windows-1.11.1.tar.gz to /root/.ansible/tmp/ansible-local-89fxlxeeam/tmpnc7dwu6h/ansible-windows-1.11.1-kp8rxb7_
ERROR! Unexpected Exception, this is probably a bug: The read operation timed out

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[mboersma]

/test pull-azure-sigs

[mboersma]

/retest

flatcar and centos-7 failed, one for each job. Looks like a flake that this change shouldn't have caused.

[mboersma]

/retest

[CecileRobertMichon]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CecileRobertMichon, mboersma

The full list of commands accepted by this bot can be found here.

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• images/capi/OWNERS [CecileRobertMichon]

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