GardenerNodeLifecycleController: add timeout for HA-disabled wait

[fwiesel]

When a node is terminating and offboarded, the controller waits for HaEnabled=False before allowing pod eviction. Previously it would wait indefinitely; now it times out after HaDisabledTimeout (default 15m), measured from the Offboarded condition's LastTransitionTime, so a stalled HA controller cannot block node termination indefinitely.

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[fwiesel]

Draft, as untested.

[github-actions]

Merging this branch will increase overall coverage

Impacted Packages	Coverage Δ	🤖
github.com/cobaltcore-dev/openstack-hypervisor-operator/internal/controller	63.63% (+0.54%)	👍

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Coverage by file

Changed files (no unit tests)

Changed File	Coverage Δ	Total	Covered	Missed	🤖
github.com/cobaltcore-dev/openstack-hypervisor-operator/internal/controller/gardener_node_lifecycle_controller.go	77.61% (+6.18%)	67 (+11)	52 (+12)	15 (-1)	👍

Please note that the "Total", "Covered", and "Missed" counts above refer to code statements instead of lines of code. The value in brackets refers to the test coverage of that file in the old version of the code.

Changed unit test files

• github.com/cobaltcore-dev/openstack-hypervisor-operator/internal/controller/gardener_node_lifecycle_controller_test.go