KVM test: generate netdev ids that newer qemu can consume

Newer qemu restricts identifiers to starting with a letter.

Signed-off-by: Avi Kivity <avi@redhat.com>


git-svn-id: http://test.kernel.org/svn/autotest/trunk@4674 592f7852-d20e-0410-864c-8624ca9c26a4
diff --git a/client/tests/kvm/kvm_vm.py b/client/tests/kvm/kvm_vm.py
index 0643bca..966fb3c 100755
--- a/client/tests/kvm/kvm_vm.py
+++ b/client/tests/kvm/kvm_vm.py
@@ -119,7 +119,7 @@
         self.address_cache = address_cache
         self.netdev_id = []
         for nic in params.get("nics").split():
-            self.netdev_id.append(kvm_utils.generate_random_string(4))
+            self.netdev_id.append(kvm_utils.generate_random_id())
 
         # Find a unique identifier for this VM
         while True: