Bump number of retries to grab VLAN edit buffer lock, and the sleep

time in between retries.  This should help out when we have dozens
of experiments swapping in and out at once.

tbsetup/snmpit_cisco.pm

@@ -273,7 +273,7 @@ sub vlanLock($) {
     # has it locked.
     #
     my $tries = 1;
-    my $max_tries = 20;
+    my $max_tries = 40;
     while ($tries <= $max_tries) {
     
 	#
@@ -299,7 +299,7 @@ sub vlanLock($) {
 	}
 	$tries++;
 
-	sleep(1);
+	sleep(3);
     }
 
     if ($tries > $max_tries) {