Drop DataPlaneService ConfigMaps and Secrets

[fao89]

• Drops the ConfigMaps and Secrets fields from OpenStackDataPlaneService.
• Updates all services under config/services to use the OpenStackDataPlaneService.Spec.DataSources field instead.
• Update docs for the switch to DataSources.

Copied: https://github.com/openstack-k8s-operators/dataplane-operator/pull/923

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[fao89]

I don't agree with dropping of the labels, at very least not all of them. There is still need for fine grained resource selection and I don't think removing labels supporting that is especially useful.

I just copied @slagle PR, but I believe the labels were removed because it didn't have a standard among the services. I think we can add labels using the webhook, this way we would ensure a standard

[softwarefactory-project-zuul[bot]]

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://review.rdoproject.org/zuul/buildset/9274fbc28b08495f80193b2b32ec6f63

:heavy_check_mark: openstack-k8s-operators-content-provider SUCCESS in 1h 30m 39s :heavy_check_mark: podified-multinode-edpm-deployment-crc SUCCESS in 1h 15m 32s :heavy_check_mark: cifmw-crc-podified-edpm-baremetal SUCCESS in 1h 13m 32s :x: openstack-operator-tempest-multinode RETRY_LIMIT in 12m 59s :heavy_check_mark: openstack-operator-docs-preview SUCCESS in 2m 02s

[rabi]

Needs a rebase after the docs patch it seems.

[rabi]

/lgtm