Add rsync deb package for swift

The rsync debian package is required for swift service. This
requirement has been covered by rpms but not for deb packages.

Change-Id: Iefd1302be9c7fd80e037bbae3638602d6d823580
diff --git a/files/debs/swift b/files/debs/swift
index 4b8ac3d..67c6c8d 100644
--- a/files/debs/swift
+++ b/files/debs/swift
@@ -2,5 +2,6 @@
 liberasurecode-dev
 make
 memcached
+rsync
 sqlite3
 xfsprogs