feat: deploy secrets as secretRef in chart values

[ElderMatt]

📌 Summary

Replaces secrets withs secretRefs for Harbor and Oauth2-Proxy.

Uses environment Variables for Loki.

[merll]

Requested changes as current implementation does not seem to work well when moving on to sealed secrets.

PTO

[j-zimnowoda]

I left one inline comment.

While running bin/compare.sh script I noticed that few Loki secretRefs are set to null which does not seem to be right.

spec.template.spec.containers.compactor
  + one map entry added:
    envFrom:
    - name: loki-s3-linode-credentials
    │ secretRef: null


data.config.yaml
  ± value change in multiline text (one insert, one deletion)
    -     s3: https://someaccessKeyId:[email protected]/my-clusterid-loki
    +     s3: https://${S3_ACCESS_KEY_ID}:${S3_ACCESS_KEY_SECRET}@nl-ams-1.linodeobjects.com/my-clusterid-loki



spec.template.spec.containers.distributor
  + one map entry added:
    envFrom:
    - name: loki-s3-linode-credentials
    │ secretRef: null


spec.template.spec.containers.ingester
  + one map entry added:
    envFrom:
    - name: loki-s3-linode-credentials
    │ secretRef: null


spec.template.spec.containers.querier
  + one map entry added:
    envFrom:
    - name: loki-s3-linode-credentials
    │ secretRef: null


spec.template.spec.containers.query-frontend
  + one map entry added:
    envFrom:
    - name: loki-s3-linode-credentials
    │ secretRef: null