Fix rsync command for files not in sync root

The `--exclude=*` added to the rsync commands for sync-common when
`--include` is used will block rsync from syncing even files and
directories that are explicitly included if any of the parent
directories of the included target are not included as well.

To sync a file `x/y/z.foo` we need to tell rsync: `--include=/x
--include=/x/y --include=/x/y/z.foo --exclude=*`.

Change-Id: Ibd5be4eb6150dda8714b438ff449a2d1f68239e3