Add jaeger deployment to minikube

[jbtrystram]

add to minikube.yaml profile :

drogueCloudCore:
  global:
    drogueCloud:
      jaeger:
        enabled: true

drogueCloudMetrics:
  tracing:
    enabled: true

TODO :

• Revisit the all in one jaeger instance ?
• Add an Ingress for the jaeger-query UI

[ctron]

I added the tracing flag (or now actually jaeger flag) to the global section. Which should make it available in all contexts under global. I also renamed it to jaeger since the meaning currently is more "tracing with jaeger".

I was hoping that by doing that, the configuration could become:

global:
  drogueCloud:
    jaeger:
      enabled: false # defaults to false
      deployOperator: true # false for openshift

And, that way, the drogue-cloud-common helm chart could ultimately handle this by providing macros which get called from both drogue-cloud-core and drogue-cloud-twin.