Reorder loop protection test so that hosts learned internally first.

Author: anarkiwi

tests/integration/mininet_tests.py

@@ -7035,14 +7035,13 @@ def verify_protected_connectivity(self):
             self.verify_one_broadcast(int_host, ext_hosts)
 
         for ext_host in ext_hosts:
-            # All external hosts cannot flood to each other.
-            for other_ext_host in ext_hosts - {ext_host}:
-                self.verify_broadcast(hosts=(ext_host, other_ext_host), broadcast_expected=False)
-
             # All external hosts can reach internal hosts.
             for int_host in int_hosts:
                 self.verify_broadcast(hosts=(ext_host, int_host), broadcast_expected=True)
                 self.one_ipv4_ping(ext_host, int_host.IP())
+            # All external hosts cannot flood to each other.
+            for other_ext_host in ext_hosts - {ext_host}:
+                self.verify_broadcast(hosts=(ext_host, other_ext_host), broadcast_expected=False)
 
     def set_externals_state(self, dp_name, externals_up):
         """Set the port up/down state of all external ports on a switch"""