util: Don't limit random mac addr range

This function was originally taken from xen, which limited the range to
reserve some MAC addresses for possible internal testing. Doesn't seem like
it was ever leveraged in practice, and libvirt doesn't limit mac generation
in a similar way, so just drop it.

Author: crobinso

virtinst/util.py

@@ -208,7 +208,7 @@ def randomMAC(type = "xen"):
         oui = ouis['xen']
 
     mac = oui + [
-            random.randint(0x00, 0x7f),
+            random.randint(0x00, 0xff),
             random.randint(0x00, 0xff),
             random.randint(0x00, 0xff) ]
     return ':'.join(map(lambda x: "%02x" % x, mac))