GH-379: move catch-and-release and unified2 scripts to policy/

These are no longer loaded by default due to the performance impact they
cause simply by being loaded (they have event handlers for commonly
generated events) and they aren't generally useful enough to justify it.

scripts/base/frameworks/netcontrol/plugins/acld.zeek

@@ -1,11 +1,11 @@
 ##! Acld plugin for the netcontrol framework.
 
-module NetControl;
-
 @load ../main
 @load ../plugin
 @load base/frameworks/broker
 
+module NetControl;
+
 export {
 	type AclRule : record {
 		command: string;

scripts/base/frameworks/netcontrol/plugins/broker.zeek

@@ -2,12 +2,12 @@
 ##! used in NetControl on to Broker to allow for easy handling, e.g., of
 ##! command-line scripts.
 
-module NetControl;
-
 @load ../main
 @load ../plugin
 @load base/frameworks/broker
 
+module NetControl;
+
 export {
 	## This record specifies the configuration that is passed to :zeek:see:`NetControl::create_broker`.
 	type BrokerConfig: record {

scripts/base/frameworks/netcontrol/plugins/packetfilter.zeek

@@ -3,10 +3,10 @@
 ##! and can only add/remove filters for addresses, this is quite
 ##! limited in scope at the moment. 
 
-module NetControl;
-
 @load ../plugin
 
+module NetControl;
+
 export {
 	## Instantiates the packetfilter plugin.
 	global create_packetfilter: function() : PluginState;