refactor common block devices
fix exception when adding services

org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [lcmc.crm.ui.resource.ServiceInfo] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.inject.Inject(), @javax.inject.Named(value=serviceInfo)}
fix npe during VM parsing
fix npe after connecting to the cluster
vm: fix updating of VM paramerers