Tune default device list for Virtuozzo containers

Virtuozzo supports virtio NIC.
Also add default VNC graphics.
Privnet feature and emulator device have no sense for vz containers.

tests/cli-test-xml/compare/virt-install-vz-ct-template.xml

@@ -8,11 +8,7 @@
     <type arch="x86_64">exe</type>
     <init>/sbin/init</init>
   </os>
-  <features>
-    <privnet/>
-  </features>
   <devices>
-    <emulator>vz</emulator>
     <filesystem type="template">
       <source name="centos-7-x86_64"/>
       <target dir="/"/>
@@ -21,6 +17,7 @@
       <source network="Bridged"/>
       <mac address="00:11:22:33:44:55"/>
     </interface>
+    <graphics type="vnc" port="-1" keymap="en-us"/>
     <console type="pty"/>
   </devices>
 </domain>

virtManager/addhardware.py

@@ -551,7 +551,7 @@ class vmmAddHardware(vmmGObjectUI):
         model.append([None, _("Hypervisor default")])
         if vm.is_hvm():
             mod_list = []
-            if vm.get_hv_type() in ["kvm", "qemu", "test"]:
+            if vm.get_hv_type() in ["kvm", "qemu", "vz", "test"]:
                 mod_list.append("virtio")
             mod_list.append("rtl8139")
             mod_list.append("e1000")

virtinst/connection.py

@@ -387,6 +387,9 @@ class VirtualConnection(object):
         return self._uriobj.scheme.startswith("openvz")
     def is_container(self):
         return self.is_lxc() or self.is_openvz()
+    def is_vz(self):
+        return (self._uriobj.scheme.startswith("vz") or
+                self._uriobj.scheme.startswith("parallels"))
 
 
     #########################

virtinst/guest.py

@@ -637,7 +637,7 @@ class Guest(XMLBuilder):
             return
         if self.get_devices("graphics"):
             return
-        if self.os.is_container():
+        if self.os.is_container() and not self.conn.is_vz():
             return
         if self.os.arch not in ["x86_64", "i686", "ppc64", "ppc64le", "ia64"]:
             return
@@ -786,7 +786,7 @@ class Guest(XMLBuilder):
             hyperv.present = True
 
     def _set_emulator_defaults(self):
-        if self.os.is_xenpv():
+        if self.os.is_xenpv() or self.type == "vz":
             self.emulator = None
             return
 
@@ -850,7 +850,7 @@ class Guest(XMLBuilder):
             self.features.acpi = None
             self.features.apic = None
             self.features.pae = None
-            if self._is_full_os_container():
+            if self._is_full_os_container() and self.type != "vz":
                 self.features.privnet = True
             return