Allow sidecar injection for query pod from other Jaeger instances

[pavolloffay]

This PR allows injecting jaeger-agent sidecar from another Jaeger instance to jaeger-query.

If the tracing is enabled in jaeger-query deployment the operator adds an annotation sidecar.jaegertracing.io/inject=<current-jaeger-instance> to a created common spec object. The annotation is merged with annotations from the CR which allows overriding the instance name e.g.:

apiVersion: jaegertracing.io/v1
kind: Jaeger
metadata:
  name: jaeger-tenant1
  namespace: rhosdt-tenant1
spec:
  strategy: production
  query:
    tracingEnabled: true
    annotations:
      sidecar.jaegertracing.io/inject: telemeter-jaeger
  storage:
    type: elasticsearch
    options:
      es:
        max-span-age: 168h # should match numberOfDays*24
    esIndexCleaner:
      enabled: true
      numberOfDays: 7
      schedule: "55 23 * * *"
    elasticsearch:
      nodeCount: 1

[codecov]

Codecov Report

Merging #1569 (a08d96b) into master (c1e6ee1) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head a08d96b differs from pull request most recent head b484849. Consider uploading reports for the commit b484849 to get more accurate results

@@            Coverage Diff             @@
##           master    #1569      +/-   ##
==========================================
- Coverage   87.58%   87.58%   -0.01%     
==========================================
  Files          94       94              
  Lines        5954     5952       -2     
==========================================
- Hits         5215     5213       -2     
  Misses        562      562              
  Partials      177      177              

Impacted Files	Coverage Δ
pkg/strategy/production.go	100.00% <ø> (ø)
pkg/controller/deployment/deployment_controller.go	53.79% <100.00%> (ø)
pkg/inject/sidecar.go	97.46% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c1e6ee1...b484849. Read the comment docs.