Fix typos in security group scenario test

Change-Id: Ie3f35108439cb0c7294415b4f9dcc4738e9a9fed
diff --git a/tempest/scenario/test_security_groups_basic_ops.py b/tempest/scenario/test_security_groups_basic_ops.py
index de6b0f9..83739fd 100644
--- a/tempest/scenario/test_security_groups_basic_ops.py
+++ b/tempest/scenario/test_security_groups_basic_ops.py
@@ -70,7 +70,7 @@
             * test that cross-tenant traffic is enabled once an appropriate
             rule has been created on destination tenant.
             * test that reverse traffic is still blocked
-            * test than revesre traffic is enabled once an appropriate rule has
+            * test than reverse traffic is enabled once an appropriate rule has
             been created on source tenant
         7._test_port_update_new_security_group:
            * test that traffic is blocked with default security group
@@ -85,7 +85,7 @@
             to it, and cross tenant check will be done on the private IP of the
             destination tenant
             or
-            * not defined (empty string), in which case each tanant will have
+            * not defined (empty string), in which case each tenant will have
             its own router connected to the public network
     """
 
@@ -466,7 +466,7 @@
     def test_port_update_new_security_group(self):
         """
         This test verifies the traffic after updating the vm port with new
-        security group having appropiate rule.
+        security group having appropriate rule.
         """
         new_tenant = self.primary_tenant