Add facts.d script to monitor deployment

facts.d/lithnet_status.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# Apt is advertised as having an unstable command-line interface.  The format of /var/lib/dpkg/status seems stable and grep will return 0 on finding one or more matches, 1 for no matches. 
+grep 'Package: lithnetaccessmanageragent' /var/lib/dpkg/status &> /dev/null
+
+if [ $? != 0 ]
+  then echo lithnet_agent=missing
+  exit 0 # This bails us out of this facts script without bothering to run the rest of it
+fi
+
+# systemctl status returns 0 for running service, 4 for not running
+systemctl status LithnetAccessManagerAgent &> /dev/null
+
+if [ $? != 0 ]
+  then echo lithnet_agent=installed_not_running
+  exit 0
+fi
+
+# To get this far without falling into an exit 0, the service must be running.
+echo lithnet_agent=running
+