[jaeger] extraSecretMounts for all-in-one configuration

[conradhanson]

What this PR does

This PR adds the ability to mount secrets to the all-in-one deployment through the .Values.allInOne.extraSecretMounts value. Implementation follows the implementation in collector-deploy.yaml.

Which issue this PR fixes

• fixes #484

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])
• [x] README.md has been updated to match version/contain new values