Add --safe-links to synchronize invocations

We don't want people to rsync files from outside the work dir by
creating symlinks and then synchronizing them. Pass in --safe-links to
rsync. rsync's behavior is that if --safe-links is present in the
presence of other options to the contrary that --safe-links will win.

Change-Id: I0e9657412edf20f0138d6fb7da994f4804f77826
1 file changed