Add a skipvlans flag to experiments table; when set, do not run

snmpit on experiment swapin. Good debugging tool.

sql/database-create.sql

@@ -1129,6 +1129,7 @@ CREATE TABLE `experiments` (
   `panic_date` datetime default NULL,
   `delay_capacity` tinyint(3) unsigned default NULL,
   `savedisk` tinyint(1) NOT NULL default '0',
+  `skipvlans` tinyint(1) NOT NULL default '0',
   `locpiper_pid` int(11) default '0',
   `locpiper_port` int(11) default '0',
   `instance_idx` int(10) unsigned NOT NULL default '0',

sql/updates/4/195

+use strict;
+use libdb;
+
+#
+# Add a skipvlans toggle so that an experiment can be swapped in
+# but without vlan creation. This is exclusively a debugging feature.
+#
+sub DoUpdate($$$)
+{
+    my ($dbhandle, $dbname, $version) = @_;
+
+    if (!DBSlotExists("experiments", "skipvlans")) {
+	DBQueryFatal("alter table experiments add ".
+		     " `skipvlans` tinyint(1) NOT NULL default '0' ".
+		     " after savedisk");
+
+    }
+    return 0;
+}
+1;
+