Revert "core-services/prow/02_config/_boskos: Shard AWS, Azure, and GCP by region"

[wking]

This reverts commit 0cb81d0, #12589.

Telemetry isn't showing any free leases on these platforms, which is freaking me out a bit. It's possible that the dashboards just don't handle static names gracefully, but I'm going to float a revert in case something breaks and we want to buy some time for a post-mortem.

/hold

Probably no sense in landing this before we actually see jobs failing on lease aquisition, but please pull the hold if we do see that.

[petr-muller]

/hold cancel

Boskos dashboard shows the lease capacity dropped to 40 in AWS when the PR merged, we're seeing alerts about that, and jobs significantly started to fail to acquire leases: https://search.ci.openshift.org/chart?search=failed+to+acquire+lease&maxAge=48h&context=1&type=bug%2Bjunit&name=&maxMatches=5&maxBytes=20971520&groupBy=job

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: petr-muller, wking

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[openshift-ci-robot]

@wking: Updated the following 2 configmaps:

• resources configmap in namespace ci at cluster app.ci using the following files:
  • key boskos.yaml using file core-services/prow/02_config/_boskos.yaml
• resources configmap in namespace ci at cluster api.ci using the following files:
  • key boskos.yaml using file core-services/prow/02_config/_boskos.yaml

In response to this:

This reverts commit 0cb81d0, #12589.

Telemetry isn't showing any free leases on these platforms, which is freaking me out a bit. It's possible that the dashboards just don't handle static names gracefully, but I'm going to float a revert in case something breaks and we want to buy some time for a post-mortem.

/hold

Probably no sense in landing this before we actually see jobs failing on lease aquisition, but please pull the hold if we do see that.

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