[jaeger] Added imagePullSecrets option for all-in-one deployment.

[MineMaarten]

What this PR does

For a project I require using a different repo for the all-in-one image, requiring pull secrets. This PR adds the ability to set these in the chart values.

Which issue this PR fixes

-

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 -> Not done, as the readme doesn't specify repository settings of the all-in-one image.

[MineMaarten]

Thanks for merging so fast 😁❤️, it is working beautifully!