[RHOAIENG-31618] extract the oauth proxy image into params.env file

This is to enable automate update in the product builds.

We still have a reference of the oauth proxy image in the
notebook_oauth.go file. It is used as a fallback if the
--oauth-proxy-image argument isn't given to the manager process.

Author: jstourac

components/odh-notebook-controller/config/base/kustomization.yaml

@@ -25,3 +25,17 @@ replacements:
       name: manager
       namespace: system
       version: v1
+- source:
+    fieldPath: data.oauth-proxy-image
+    kind: ConfigMap
+    name: odh-notebook-controller-image-parameters
+    version: v1
+  targets:
+  - fieldPaths:
+    - spec.template.spec.containers.0.args.1
+    select:
+      group: apps
+      kind: Deployment
+      name: manager
+      namespace: system
+      version: v1

components/odh-notebook-controller/config/base/params.env

@@ -1 +1,2 @@
 odh-notebook-controller-image=quay.io/opendatahub/odh-notebook-controller:main
+oauth-proxy-image=registry.redhat.io/openshift4/ose-oauth-proxy-rhel9@sha256:ca21e218e26c46e3c63d926241846f8f307fd4a586cc4b04147da49af6018ef5

components/odh-notebook-controller/config/manager/manager.yaml

@@ -25,7 +25,7 @@ spec:
           imagePullPolicy: Always
           command:
             - /manager
-          args: ["--oauth-proxy-image", "registry.redhat.io/openshift4/ose-oauth-proxy-rhel9@sha256:ca21e218e26c46e3c63d926241846f8f307fd4a586cc4b04147da49af6018ef5"]
+          args: ["--oauth-proxy-image", "oauth-proxy-image_PLACEHOLDER"]
           securityContext:
             allowPrivilegeEscalation: false
           ports: