Add hook for Threshold autocreation

This change adds a new hook which Cacti v1.3 can call during
an automation cycle to automatically create a Threshold for
the given device.  It removes the need for hardcoded plugin
functionality/checks just to generate the thresholds

INFO

@@ -1,6 +1,6 @@
 [info]
 name = thold
-version = 1.2.1
+version = 1.2.2
 longname = Thresholds
 author = The Cacti Group
 email = 

README.md

@@ -101,6 +101,12 @@ that.
 
 ## ChangeLog
 
+--- 1.2.2 ---
+
+* feature: Add hook for Threshold autocreation during automation cycle.  This
+  allows Cacti v1.3 to use a hook instead of hardcoded plugin functionality to
+  generate the thresholds
+
 --- 1.2.1 ---
 
 * feature: Allow CLOG to direct link to threshold

setup.php

@@ -56,6 +56,7 @@ function plugin_thold_install($upgrade = false) {
 	api_plugin_register_hook($plugin, 'device_action_prepare', 'thold_device_action_prepare', 'setup.php');
 	api_plugin_register_hook($plugin, 'api_device_save', 'thold_api_device_save', 'setup.php');
 	api_plugin_register_hook($plugin, 'host_edit_bottom', 'thold_host_edit_bottom', 'setup.php');
+	api_plugin_register_hook($plugin, 'device_threshold_autocreate', 'thold_device_autocreate', 'setup.php');
 
 	// Automation Hooks
 	api_plugin_register_hook($plugin, 'create_complete_graph_from_template', 'thold_create_graph_thold', 'setup.php');
@@ -1388,6 +1389,10 @@ function thold_device_template_top() {
 	}
 }
 
+function thold_hook_device_autocreate($host_id) {
+	autocreate($host_id);
+}
+
 function thold_create_graph_thold($save) {
 	global $config;