More pylint warning fixes

Change-Id: I238efda44285973a1fa2e2f6110bc9447cca5f81
diff --git a/admin.py b/admin.py
index 5f76742..a9e8d4f 100644
--- a/admin.py
+++ b/admin.py
@@ -591,20 +591,24 @@
     print 'Attempting to import switch %s' % opts.auto_import_switch
     if opts.auto_import_switch not in config.switches:
         raise InputError("Can't find switch %s in config" % opts.auto_import_switch)
-    ret = call_vland('vlan_update',
+    imp = call_vland('vlan_update',
                      {'command':'api.auto_import_switch',
                       'data':
                       {'switch': opts.auto_import_switch}})
-    print 'VLANd imported switch %s successfully: new switch_id %d, %d new ports, %d new VLANs' % (opts.auto_import_switch, ret['switch_id'], ret['num_ports_added'], ret['num_vlans_added'])
+    print 'VLANd imped switch %s successfully: new switch_id %d, %d new ports, %d new VLANs' % (opts.auto_import_switch, imp['switch_id'], imp['num_ports_added'], imp['num_vlans_added'])
 elif opts.probe_switches:
     print 'Asking VLANd to probe all the configured switches'
-    ret = call_vland('daemon_query',{'command':'daemon.probe_switches', 'data': None})
-    for field in ret:
-        print '%s: %s' % (field, ret[field])
+    probe = call_vland('daemon_query',
+                       {'command':'daemon.probe_switches',
+                        'data': None})
+    for field in probe:
+        print '%s: %s' % (field, probe[field])
 elif opts.shutdown:
     print 'Asking VLANd to shutdown'
-    ret = call_vland('daemon_query',{'command':'daemon.shutdown', 'data': None})
-    for field in ret:
-        print '%s: %s' % (field, ret[field])
+    shutdown = call_vland('daemon_query',
+                          {'command':'daemon.shutdown',
+                           'data': None})
+    for field in shutdown:
+        print '%s: %s' % (field, shutdown[field])
 else:
     print 'No recognised command given. Try -h for help'