[OSPRH-12074] Use TLS for Kepler metrics

[vyzigold]

Depends-On: openstack-k8s-operators/edpm-ansible#877

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[vyzigold]

This is waiting until kepler version "release-0.7.13" or "release-0.8.1" is released (whatever is sooner) and the respective container images are used in the upstream and downstream CI.

[softwarefactory-project-zuul]

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https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/4487fc997cda4a4080167f9eaf92d53f

✔️ openstack-k8s-operators-content-provider SUCCESS in 1h 59m 43s
✔️ podified-multinode-edpm-deployment-crc SUCCESS in 1h 22m 20s
✔️ telemetry-operator-multinode-autoscaling-tempest SUCCESS in 1h 19m 03s
✔️ telemetry-operator-multinode-default-telemetry SUCCESS in 1h 26m 30s
❌ telemetry-operator-multinode-power-monitoring FAILURE in 1h 30m 46s
✔️ functional-tests-on-osp18 SUCCESS in 1h 26m 29s
✔️ functional-logging-tests-osp18 SUCCESS in 1h 14m 27s
✔️ functional-graphing-tests-osp18 SUCCESS in 1h 13m 08s
❌ functional-metric-verification-tests-osp18 FAILURE in 1h 42m 16s