[jaeger] Add option to configure ingester only via environment variables

[foxylion]

What this PR does

Until now it was not possible to configure brokers, topic and authentication via environment variables because there where always environment variables added that sourced the values from the values.yaml file.

When the configuration values are only available through ConfigMaps this is not possible to provide via values.yaml.

Checklist

• [x] DCO signed
• [x] Commits are GPG signed
• [x] Chart Version bumped
• [x] Title of the PR starts with chart name ([jaeger] or [jaeger-operator])
• [ ] README.md has been updated to match version/contain new values