Exclude ifupdown as it slows down boot

Author: XECDesign

scripts/common

@@ -12,7 +12,7 @@ bootstrap(){
 	BOOTSTRAP_ARGS+=(--arch armhf)
 	BOOTSTRAP_ARGS+=(--components "main,contrib,non-free")
 	BOOTSTRAP_ARGS+=(--keyring "${STAGE_DIR}/files/raspberrypi.gpg")
-	BOOTSTRAP_ARGS+=(--exclude=info)
+	BOOTSTRAP_ARGS+=(--exclude=info,ifupdown)
 	BOOTSTRAP_ARGS+=(--include=ca-certificates)
 	BOOTSTRAP_ARGS+=("$@")
 	printf -v BOOTSTRAP_STR '%q ' "${BOOTSTRAP_ARGS[@]}"