[cdist #3] update for multiple optional

kjg/dot-cdist/manifest/init

@@ -2,6 +2,6 @@ case "$__target_host" in
     # Everybody has this
     localhost)
        #__my_computer
-       __colourful_file
+       __colourful_file test --colour test1 --colour test2
     ;;
 esac

kjg/dot-cdist/type/__colourful_file/manifest

@@ -4,7 +4,8 @@ DOMAIN_NAME="$__object_id"
 
 COLOUR=$(cat "$__object/parameter/colour")
 
-__file ~/colourful \
-	    --mode 0644 --source - <<EOF
-colour=$COLOUR
-EOF
+if [ -f "$__object/parameter/colour" ]; then
+   for col in $(cat $__object/parameter/colour); do
+      echo "colour="$col >> ~/colourful
+   done
+fi