Replicate support for logger level found in StreamNative chart

**Is your feature request related to a problem? Please describe.**
A feature already developed in the StreamNative chart supports changing the logger level dynamically via a deployment for individual components of the cluster. https://github.com/streamnative/charts/pull/35/commits

**Describe the solution you'd like**
I would like for this solution to be merged into this chart. I am happy to create a PR for it if the team feels it is necessary.

**Describe alternatives you've considered**
I've considered doing the work myself and not contributing.

Start by reviewing the StreamNative charts pull request linked in the issue and compare its logger-level support with this Apache Pulsar Helm chart. Identify the chart templates and values involved, then verify that individual cluster components can receive dynamic logger levels through a deployment. No local files or tests are named in the issue.

Written by the indexing model from the issue text.