chore: add KeptnApp migration script #13957

Job	Run time
Prepare CI Run	7s
Build Docker Image (lifecycle-operator, lifecycle-operator/)	1m 32s
Store tag of the built images	2s
Build Docker Image (metrics-operator, metrics-operator/)	2m 1s
Unit Tests (lifecycle-operator, lifecycle-operator/)	1m 52s
Build Docker Image (scheduler, scheduler/)	1m 48s
Unit Tests (metrics-operator, metrics-operator/)	3m 15s
Build Docker Image (deno-runtime, runtimes/deno-runtime/)	43s
Unit Tests (scheduler, scheduler/)	40s
Build Docker Image (python-runtime, runtimes/python-runtime/)	30s
Unit Tests (certificate-operator, keptn-cert-manager/)	1m 11s
Build Docker Image (certificate-operator, keptn-cert-manager/)	1m 27s
Component Tests / Component Tests	3m 2s
Publish helm chart changes to charts repo	0s
End to End Tests / Run E2E Tests (lifecycle-operator, lifecycle-operator/)	2m 53s
End to End Tests / Run E2E Tests (scheduler, scheduler/)	3m 15s
Load Tests / Run load Tests	6m 32s
Integration Tests (gates_off, allowed_ns_off) / Run Integration Tests	10m 22s
Integration Tests (gates_off, allowed_ns_off) / Run Chainsaw Tests	2m 20s
Integration Tests (gates_off, allowed_ns_on) / Run Chainsaw Tests	2m 53s
Integration Tests (gates_on, allowed_ns_off) / Run Chainsaw Tests	3m 27s
Integration Tests (gates_off, allowed_ns_on) / Run Integration Tests	3m 0s
Integration Tests (gates_on, allowed_ns_off) / Run Integration Tests	11m 39s
Integration Tests (gates_on, allowed_ns_on) / Run Chainsaw Tests	3m 5s
Integration Tests (gates_on, allowed_ns_on) / Run Integration Tests	3m 7s
	1h 10m 43s

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