Make source package creation repeatable

- Due to all sorts of not preserving file times, and embedding
timestamps, creation of source tarballs would not product the same
artifact each time. Fix a few options to ensure that the source tarballs
always are the same (assuming no changes to the contents, of course)

Change-Id: I6aeffcd526e82c5f2a2bd62c69544bd543049a95
1 file changed