openvz 7 support
feature request: add support for openvz 7
openvz 7 is a full rhel7-based OS which supports both containers and kvm; the old 'vzctl' commands are gone, replaced by similar 'prlctl' commands which can manage both containers and virtual machines. full-featured management may be outside of what is in mind for ipsconfig's 'vserver' module, but basic support to stop/start/etc. should be fairly straightforward to add.