Merge branch '254-add-application-instance-scaling-support' into 'develop'

...ice/configuration/api/GitLabWebhookControllerIntTest.java

...et/geant/nmaas/kubernetes/KubernetesApiClientService.java

.../nmaas/nmservice/NmServiceDeploymentStateChangeEvent.java

...service/configuration/NmServiceConfigurationExecutor.java

.../nmservice/configuration/api/GitLabWebhookController.java

.../nmservice/deployment/NmServiceDeploymentCoordinator.java

...maas/nmservice/deployment/NmServiceRepositoryManager.java

.../components/cluster/DefaultKServiceOperationsManager.java

...nt/nmaas/nmservice/deployment/entities/NmServiceInfo.java

...nmservice/deployment/entities/ServiceDeploymentState.java

...ervice/deployment/repository/NmServiceInfoRepository.java

.../nmaas/orchestration/AppDeploymentStateChangeManager.java

...geant/nmaas/orchestration/DefaultAppLifecycleManager.java

...eant/nmaas/orchestration/entities/AppDeploymentState.java

...hestration/tasks/app/AppDcnRequestOrVerificationTask.java

...as/orchestration/tasks/app/AppRemoveFailedActionTask.java

...as/orchestration/AppDeploymentStateChangeManagerTest.java

.../nmaas/orchestration/entities/AppDeploymentStateTest.java