Update OperandConfig with value reference

[Daniel-Fan]

Please merge this PR ONLY AFTER ODLM's PR is merged: IBM/operand-deployment-lifecycle-manager#990

Update

1. KeyCloak Route is created by ODLM directly, and support value reference on following fields.
   • spec.host: Optional, user could specify custom hostname by updating .data.keycloak_route_name in ibm-cpp-config ConfigMap
   • spec.tls.caCertificate, spec.tls.certificate, spec.tls.key: Optional, user could specify custom certificate by creating secret keycloak-custom-tls-secret
   • spec.tls.destinationCACertificate: Required, it is referencing the CA cert from cs-keycloak-tls-secret
2. KeyCloak CR is created by ODLM, and support value reference on following fields.
   • spec.hostname.hostname: Required, it is reference the .spec.host from keycloak Route
   • spec.ingress.enabled: false to turn off KeyCloak operator creating Ingress Object, so it will use Route directly.
3. EDB Cluster CR is created by ODLM directly, and support value reference on following fields.
   • spec.imageName: Required.
     • The default value is icr.io/cpopen/edb/postgresql:14.9@sha256:90136074adcbafb5033668b07fe1efea9addf0168fa83b0c8a6984536fc22264.
     • And if the ConfigMap cloud-native-postgresql-image-list exists in operator namespace, it will reference .data.ibm-postgresql-14-operand-image
     • And user could specify .data.edb-keycloak-operand-image in ibm-cpp-config ConfigMap to override above default EDB image setting.

[YCShen1010]

/lgtm

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