Add modelmesh cred secrets.

[HumairAK]

Description

Add auth to etcd.

Part of:

• https://github.com/red-hat-data-services/odh-manifests/pull/272
• https://gitlab.cee.redhat.com/data-hub/rhods-live-builder/-/merge_requests/100

Testing instructions:

1. ./setup.sh quay.io/hukhan/rhods-operator-live-catalog:1.20.1-5451
2. Confirm that the following secrets are created by the odh-deployer:

oc -n redhat-ods-applications get secret model-serving-etcd -o jsonpath='{.data.etcd_connection}' | base64 -d
oc -n redhat-ods-applications get secret etcd-passwords -o jsonpath='{.data.root}' | base64 -d

The passwords in both secrets should match. One is used by etcd to create the root user, the other is used by MM to access etcd as this same user.

3. Wait for the modelmesh monitoring stack pods to come up
4. Clone https://github.com/opendatahub-io/modelmesh-serving/tree/main/quickstart.
5. Comment out lines 32 and 33.
6. ./quickstart.sh. Wait for the script to finish runnning
7. Test MM infer route to confirm it works.
8. Update the value of password field in secret model-serving-etcd in redhat-ods-applications, so that it is different than the one in the secret etcd-passwords. Recreate the serving run time:

oc delete -f openvino-inference-service.yaml -f openvino-serving-runtime.yaml 
./quickstart.sh

10. The modelmesh runtime pods will fail to boot up because they have the incorrect credentials to etcd.

Merge criteria:

• [x] The commits are squashed in a cohesive manner and have meaningful messages.
• [x] JIRA link(s): https://issues.redhat.com/browse/RHODS-5451
• [ ] Live build image:
• [ ] Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• [ ] The developer has manually tested the changes and verified that the changes work.
• [ ] QE contact acknowledges that this has been tested and is approved for merge.

[HumairAK]

Incorporates: https://github.com/red-hat-data-services/odh-deployer/pull/279/files

[openshift-ci[bot]]

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