feat: implement initialize and execute states within update run

[britaniar]

Description of your changes

I have:

• Update state variable names to match the value.

• Update the update run controller to use State from the Spec. Implementation mostly is for update runs in Initialize state or Execute state or moving from Initialize state to Execute state.

• Updated conditional checks to disregard generation checks as update run is immutable but the State field.

• Added/update integrations tests and e2e tests.

• Run make reviewable to ensure this PR is ready for review.

How has this code been tested

• Integration Tests
• E2E Test

Special notes for your reviewer

This change covers when update run starts as state Initialize then to Execute or starts at state Execute.
The initialized condition should be successfully initialized once.

Generation will change each time update run state is updated and only when the state is updated. The rest of update run spec is immutable. Can correlate generation with state change.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[Copilot]

Pull request overview

This PR implements the Start/Stop API for update runs, introducing state-based control over update run execution. The changes enable users to create update runs in a NotStarted state, transition them to Started to begin execution, Stopped to pause, and Abandoned to terminate. Key changes include:

• Updated the updateRun controller to use State from the Spec to determine execution flow
• Modified conditional checks to disregard generation for immutable fields (only State changes)
• Refactored executeUpdatingStage into smaller helper methods to reduce complexity
• Added comprehensive integration and E2E tests for state transitions

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
pkg/controllers/updaterun/controller.go	Added state-based execution control with early checks for Abandoned/Stopped states; modified initialization logic to ignore generation changes
pkg/controllers/updaterun/execution.go	Refactored executeUpdatingStage into smaller helper methods; removed generation checks from condition evaluations
pkg/controllers/updaterun/validation.go	Updated condition checks to be generation-independent for succeeded/failed states
pkg/utils/condition/reason.go	Added new condition reasons: UpdateRunPausedReason and UpdateRunAbandonedReason
test/e2e/staged_updaterun_test.go	Updated all createStagedUpdateRunSucceed calls to include state parameter; added comprehensive E2E test for state transitions
test/e2e/cluster_staged_updaterun_test.go	Updated all createClusterStagedUpdateRunSucceed calls to include state parameter; added E2E test for cluster-scoped state transitions
test/e2e/actuals_test.go	Added helper functions for validating NotStarted, Stopped, and Abandoned states; refactored status building logic
pkg/controllers/updaterun/*_integration_test.go	Updated test helpers to use reason strings; added integration tests for NotStarted/Stopped/Abandoned states

[Copilot]

Pull request overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 1 comment.

[ryanzhang-oss]

This PR should change the updateRun state variable name too

[Arvindthiru]

LGTM