To Reproduce Steps to reproduce the behavior:

1. Create an environment, which will result in a dns_search_domain being shorter than 8 characters and that domain will appear before the ctlplane domain in the list of dns_search_domain
2. enable the metric-storage
3. Observe telemetry-operator panicking

Expected behavior

• telemetry-operator doesn't panic and telemetry is deployed correctly

Bug impact

• Openstack control plane can't be deployed in certain environments

Known workaround

• Ensure all dns_search_domain names are longer than 8 characters

Additional context

• Example of a list of dns_search_domains causing issues

            dns_search_domains:
                - abc
                - ctlplane.abc.com
                - internalapi.abc.com
                - storage.abc.com
                - tenant.abc.com

• Slack conversation, which uncovered the issue https://redhat-internal.slack.com/archives/C0YDMFY2G/p1745660549973789?thread_ts=1745500875.468799&cid=C0YDMFY2G
• Line causing the issues: https://github.com/openstack-k8s-operators/telemetry-operator/blob/main/controllers/metricstorage_controller.go#L1210