cloner: Don't validate new clone name (bz 1054771)

Our validation check might not be up to date, WRT what characters are
acceptable. So if we try to --auto-clone an existing valid VM with
some characters we aren't expecting, we cause ourselves to error.

Just skip the validation and let libvirt complain if something is wrong.

virtinst/cloner.py

@@ -100,7 +100,8 @@ class Cloner(object):
     def set_clone_name(self, name):
         try:
             Guest.validate_name(self.conn, name,
-                                check_collision=not self.replace)
+                                check_collision=not self.replace,
+                                validate=False)
         except ValueError, e:
             raise ValueError(_("Invalid name for new guest: %s") % e)
 

virtinst/guest.py

@@ -73,7 +73,8 @@ class Guest(XMLBuilder):
                                (str(e)))
 
     @staticmethod
-    def validate_name(conn, name, check_collision):
+    def validate_name(conn, name, check_collision, validate=True):
+        if validate:
             util.validate_name(_("Guest"), name)
         if not check_collision:
             return