Allow brupop-controller-deployment pods to be discovered by Splunk otel-collector

[AndreiBanaruTakeda]

Issue number:
#676

Description of changes:
Ensured deployment/brupop-controller-deployment is annotated for Splunk otel-collector to discover its pods:

spec:
  template:
    metadata:
      annotations:
        prometheus.io/port: "8080"
        prometheus.io/scrape: "true"

Testing done:

1. I manually edited deploy/brupop-controller-deployment and added the above annotations
2. kubectl rollout restart deployment brupop-controller-deployment
3. I had to wait for the scheduler_cron_expression for metrics to become available
4. Checked for the metrics in Splunk

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.

[yeazelm]

LGTM! Thanks for the contribution!