fix(rngd): install system service file

as there's no reason to keep a copy; there shouldn't be any modifications.

In case there are args stored in a separate file (Fedora and alike),
it needs to be supplied too, but without the option to change the user.

modules.d/06rngd/module-setup.sh

@@ -32,7 +32,12 @@ depends() {
 
 install() {
     inst rngd
-    inst_simple "${moddir}/rngd.service" "${systemdsystemunitdir}/rngd.service"
+    inst_simple "${systemdsystemunitdir}/rngd.service"
+
+    if [ -r /etc/sysconfig/rngd ]; then
+        inst_simple "${moddir}/sysconfig" "/etc/sysconfig/rngd"
+    fi
+
     # make sure dependent libs are installed too
     inst_libdir_file opensc-pkcs11.so
 

modules.d/06rngd/sysconfig

@@ -0,0 +1 @@
+RNGD_ARGS="-x pkcs11 -x nist"