spike: reduce Monitoring Console restart churn from ConfigMap metadata updates

[vivekr-splunk]

Summary

• switch MC pod-template annotation monitoringConsoleConfigRev to a deterministic hash of MC ConfigMap data
• avoid rollouts when only ConfigMap metadata/resourceVersion changes
• add unit tests for hash determinism and statefulset annotation behavior

Why

During C3-style bring-up, MC can restart multiple times. One trigger is that annotation currently follows ConfigMap resourceVersion, so metadata-only updates can force unnecessary restarts. This spike constrains restarts to effective data changes only.

Testing

• go test ./pkg/splunk/enterprise -run "TestGetMonitoringConsoleConfigDataHash|TestGetMonitoringConsoleStatefulSetUsesConfigDataHash|TestGetMonitoringConsoleStatefulSet|TestApplyMonitoringConsoleEnvConfigMap" -count=1

[Copilot]

Pull request overview

This PR optimizes Monitoring Console (MC) pod restart behavior during C3-style bring-up by switching from ConfigMap resourceVersion tracking to deterministic data hashing. This prevents unnecessary MC restarts when only ConfigMap metadata changes (not actual data).

Changes:

• Replaced ConfigMap resourceVersion with SHA256 data hash for the monitoringConsoleConfigRev annotation
• Added deterministic hash function that sorts keys to ensure consistent output regardless of map iteration order
• Added comprehensive unit tests for hash determinism and statefulset annotation behavior

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
pkg/splunk/enterprise/monitoringconsole.go	Implemented getMonitoringConsoleConfigDataHash() function and updated getMonitoringConsoleStatefulSet() to use data hash instead of resourceVersion
pkg/splunk/enterprise/monitoringconsole_test.go	Added tests for hash determinism (TestGetMonitoringConsoleConfigDataHash) and integration test verifying statefulset uses data hash (TestGetMonitoringConsoleStatefulSetUsesConfigDataHash)

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