Resolve "Support deployment of applications on remote clusters"

Related to #296

src/main/java/net/geant/nmaas/externalservices/kubernetes/entities/KClusterDeployment.java

@@ -12,10 +12,6 @@ import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
-import net.geant.nmaas.orchestration.entities.DomainTechDetails;
-import org.apache.commons.lang3.StringUtils;
-
-import java.util.Optional;
 
 @Entity
 @Table(name = "k_cluster_deployment")