[Feature]: Support InitContainer in collector

[pie-r]

Requirement

Jaeger Operator doesn't support yet Elasticsearch 8, for this reason users have to

   storage:
      type: elasticsearch
      secretName: ${elasticsearch_credentials_secret}
      options:
        es:
          server-urls: http://${elasticsearch_url}
          max-span-age: ${elasticsearch_retention * 24}h
          version: 7                                                 # Necessary as it doesn't work with 8 yet
          create-index-templates: false               # Necessary as it doesn't work with 8 yet

The index-tempalte could be added as initContainer to the collector manifest.

Reference: https://github.com/jaegertracing/jaeger/issues/3571

Problem

Jaeger doesn't support yet Elasticsearch 8.x

Proposal

Add an InitContainter section in the elasticsearch collector manifest

Open questions

No response