Add smoke tests for quantum.

 * Added test_network_basic_ops, a port of the devstack exercise
   script quantum-adv-test.sh.
 * Tenant network connectivity can be tested by setting
   the 'tenant_networks_reachable' key in tempest.conf to 'true'.
 * Public (floating ip) connectivity can be tested by setting the
   'public_network_id' key in tempest.conf.
 * Addresses bug 1043980

Change-Id: I506518c431a8da0b91e3044f2a6aabce48081d93
diff --git a/tools/pip-requires b/tools/pip-requires
index 3a2283f..7877906 100644
--- a/tools/pip-requires
+++ b/tools/pip-requires
@@ -5,3 +5,4 @@
 lxml
 boto>=2.2.1
 paramiko
+netaddr