Currently, xdelta3 has CAP_DAC_OVERRIDE itself by file capability.
This is security hole, because attacker can modify any files using
xdelta3. To prevent this problem, make xdelta3 have CAP_DAC_OVERRIDE
only by inheriting from server.
Change-Id: I76f9416cff0c8b2e54c18093c162f6044c399245 Signed-off-by: Sangyoon Jang <s89.jang@samsung.com>