Metrics keptn.deployment.deploymentinterval and keptn.app.deploymentinterval not calculated

[bacherfl]

Detected in current main branch

Currently, the two metrics mentioned in the title are not exported, most likely due to the change of the naming scheme which was introduced for the restartable applications feature - due to these changes the lookup of the predecessor of a KeptnAppVersion does not yield any result, as it does not consider the revision in the name lookup:

lifecycle-toolkit/operator/controllers/common/metrics.go

Line 51 in d19b533

err := client.Get(ctx, types.NamespacedName{Name: fmt.Sprintf("%s-%s", reconcileObject.GetParentName(), reconcileObject.GetPreviousVersion()), Namespace: reconcileObject.GetNamespace()}, previousObject)

Also, since this function already has the complete list of KeptnAppVersions/WorkloadInstances we might be able to get rid of the GET request to the kubernetes API when retrieving the predecessor of the respective AppVersion/WorkloadInstance