Added systemd plugin to list

default.prf

@@ -53,11 +53,15 @@ config:show_tool_tips:1:
 # Plugins
 # ---------------
 # Define which plugins are enabled
-# (nothing happens if plugin isn't available)
+#
+# Notes:
+# - Nothing happens if plugin isn't available
+# - There is no order in execution of plugins
+# - See documentation about how to use plugins and phases
 #
 #################################################################################
 
-# Lynis Plugins for Enterprise Users
+# Lynis Plugins (some are for Lynis Enterprise users only)
 plugin=compliance
 plugin=control-panels
 plugin=crypto
@@ -74,8 +78,10 @@ plugin=processes
 plugin=security-modules
 plugin=software
 plugin=system-integrity
+plugin=systemd
 plugin=users
 
+
 #################################################################################
 #
 # Sysctl options
@@ -159,7 +165,6 @@ sysctl:net.ipv6.conf.default.accept_source_route:0:1:Disable IP source routing:
 #security.bsd.unprivileged_get_quota: 0
 
 
-
 #################################################################################
 #
 # Apache options