[jaeger] Will allow anonymous login to ElasticSearch

[klubi]

Signed-off-by: Piotr Klubinski pklubinski@gmail.com

What this PR does

This PR allows to not render ES_USERNAME or ES_PASSWORD if storage.elasticsearch.anonymous: true.

Which issue this PR fixes

• fixes #441

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

[klubi]

@dvonthenen @naseemkullah @pavelnikolov There seem to be two PR's on the same topic. Other one was created some time ago.

https://github.com/jaegertracing/helm-charts/pull/384

Any chance this get's reviewed anytime soon? Thanks!