Add more example privsets.

etc/example.conf

@@ -58,7 +58,19 @@ server "Thinstack" {
 }
 
 # Privileges.
+privset "op" {
+    # Privileges to use RESTART and SHUTDOWN.
+    priv "cmd.restart";
+    priv "cmd.shutdown";
+}
+privset "admin" {
+    # Inherit privileges from op.
+    inherit "op";
+    # Privilege to use MODLOAD, MODRELOAD and MODUNLOAD.
+    priv "cfunc.modules";
+}
 privset "owner" {
+    # All privileges.
     priv "ALL";
 }