preamble: Add software-properties-common

Change-Id: I92bec3c1b3b7529dfd7e159f073ed37891f45724
diff --git a/preamble.mk b/preamble.mk
index 8b29f49..ea211a1 100644
--- a/preamble.mk
+++ b/preamble.mk
@@ -123,6 +123,7 @@
 	reportbug \
 	rsync \
 	rsyslog \
+	software-properties-common \
 	sudo \
 	systemd \
 	systemd-sysv \