Support cookie_refresh for oauth2-proxy.

[monaka]

This is a draft. I'll fill in the description later.

What does this PR do?

Screenshot/screencast of this PR

What issues does this PR fix or reference?

eclipse-che/che#21376
eclipse-che/che#22130
eclipse-che/che#22765

How to test this PR?

1. Prepare a patch file if needed:

cat > /tmp/cr-patch.yaml <<EOF
apiVersion: org.eclipse.che/v2
kind: CheCluster
spec: {}
EOF

2. Deploy the operator:

OpenShift

./build/scripts/olm/test-catalog-from-sources.sh --cr-patch-yaml /tmp/cr-patch.yaml

on Minikube

./build/scripts/minikube-tests/test-operator-from-sources.sh --cr-patch-yaml /tmp/cr-patch.yaml

PR Checklist

As the author of this Pull Request I made sure that:

• The Eclipse Contributor Agreement is valid
• Code produced is complete
• Code builds without errors
• Tests are covering the bugfix
• Development resource are up to date
• The repository devfile is up to date and works
• Sections What issues does this PR fix or reference and How to test this PR completed
• Relevant user documentation updated
• Relevant contributing documentation updated
• CI/CD changes implemented, documented and communicated

Reviewers

Reviewers, please comment how you tested the PR when approving it.

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: monaka

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
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[codecov]

Codecov Report

Attention: 8 lines in your changes are missing coverage. Please review.

Comparison is base (1ae0142) 59.75% compared to head (627d71b) 59.73%.

Files	Patch %	Lines
api/v2/zz_generated.deepcopy.go	0.00%	5 Missing ⚠️
pkg/deploy/gateway/oauth_proxy.go	70.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1810      +/-   ##
==========================================
- Coverage   59.75%   59.73%   -0.03%     
==========================================
  Files          74       74              
  Lines        9107     9122      +15     
==========================================
+ Hits         5442     5449       +7     
- Misses       3290     3297       +7     
- Partials      375      376       +1     

☔ View full report in Codecov by Sentry.
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[monaka]

I believe this will work as expected.
But issues will be resolved by another way.
So I close this.