🐛 add rollingUpdate strategy

[jianzhangbjz]

Description

To address the issue: the cluster operator olm Available=False when cluster upgrading.
I have tested this solution in openshift/operator-framework-operator-controller#515, and it works.

Reviewer Checklist

• API Go Documentation
• Tests: Unit Tests (and E2E Tests, if appropriate)
• Comprehensive Commit Messages
• Links to related GitHub Issue(s)

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[jianzhangbjz]

https://github.com/operator-framework/operator-controller/actions/runs/18452353047/job/52567797659?pr=2263 failed at:

    cluster_extension_install_test.go:1052: By eventually reporting Progressing == True with Reason Retrying
    cluster_extension_install_test.go:1053: 
        	Error Trace:	/home/runner/work/operator-controller/operator-controller/test/e2e/cluster_extension_install_test.go:1058
        	            				/opt/hostedtoolcache/go/1.24.4/x64/src/runtime/asm_amd64.s:1700
        	Error:      	Not equal: 
        	            	expected: "Retrying"
        	            	actual  : "RolloutInProgress"
        	            	
        	            	Diff:
        	            	--- Expected
        	            	+++ Actual
        	            	@@ -1 +1 @@
        	            	-Retrying
        	            	+RolloutInProgress
    cluster_extension_install_test.go:1053: 
        	Error Trace:	/home/runner/work/operator-controller/operator-controller/test/e2e/cluster_extension_install_test.go:1053
        	Error:      	Condition never satisfied
        	Test:       	TestClusterExtensionRecoversFromExistingDeploymentWhenFailureFixed

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.87%. Comparing base (95c5934) to head (9e5978e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2263   +/-   ##
=======================================
  Coverage   72.87%   72.87%           
=======================================
  Files          88       88           
  Lines        8733     8733           
=======================================
  Hits         6364     6364           
  Misses       1955     1955           
  Partials      414      414           

Flag	Coverage Δ
e2e	39.29% <ø> (+0.03%)	⬆️
experimental-e2e	46.31% <ø> (ø)
unit	57.99% <ø> (ø)

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[tmshort]

/approve
/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tmshort

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[tmshort]

https://github.com/operator-framework/operator-controller/actions/runs/18452353047/job/52567797659?pr=2263 failed at...
@jianzhangbjz this is an uncommon flake... to the point we usually just run the test again and it passes.