Use ECDSA P-256 private keys for cert-manager certificates

[fmount]

Switch all cert-manager Certificate resources from the default RSA algorithm to ECDSA P-256. This applies to webhook serving certs, metrics server certs, and all operator bindata certificates. The sync-bindata.sh script is updated accordingly (and it properly regenerates all the services files).

Jira: https://redhat.atlassian.net/browse/OSPRH-27314

[openshift-ci]

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[github-actions]

OpenStackControlPlane CRD Size Report

Metric	Value
CRD JSON size	350002 bytes (342KB)
Base branch size	350002 bytes
Change	+0.00%
Status	yellow — growing

Threshold reference

Color	Range	Meaning
🟢 green	< 300KB	Comfortable
🟡 yellow	300–400KB	Growing
🟠 orange	400–750KB	Concerning
🔴 red	> 750KB	Approaching 1.5MB etcd limit (cut in half to allow space for update)

[centosinfra-prod-github-app]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://gateway-cloud-softwarefactory.apps.ocp.cloud.ci.centos.org/zuul/t/rdoproject.org/buildset/d91800d9b448468ca01c8104cce1d670

❌ openstack-k8s-operators-content-provider FAILURE in 4m 01s
⚠️ podified-multinode-edpm-deployment-crc SKIPPED Skipped due to failed job openstack-k8s-operators-content-provider
⚠️ cifmw-crc-podified-edpm-baremetal SKIPPED Skipped due to failed job openstack-k8s-operators-content-provider
⚠️ openstack-operator-tempest-multinode SKIPPED Skipped due to failed job openstack-k8s-operators-content-provider
⚠️ openstack-operator-edpm-baremetal-minor-update SKIPPED Skipped due to failed job openstack-k8s-operators-content-provider

[fmount]

/test openstack-operator-build-deploy-kuttl-4-18

[fmount]

recheck

[stuggi]

I guess its ok to get this in 18 as well? for the 18/19 branching, we plan to branch one more from main. we'll discuss in our tomorrows meeting

[fmount]

I guess its ok to get this in 18 as well? for the 18/19 branching, we plan to branch one more from main. we'll discuss in our tomorrows meeting

This is technically ok for 18 as well. The target is 19 of course, so we can also hold it until we branch a stable-18. We can discuss more sure.

[fmount]

I guess its ok to get this in 18 as well? for the 18/19 branching, we plan to branch one more from main. we'll discuss in our tomorrows meeting

This is technically ok for 18 as well. The target is 19 of course, so we can also hold it until we branch a stable-18. We can discuss more sure.

@stuggi as this is not a goal for 18, my proposal is to land this after we branch stable-18.