utils: Make sure to preserve all attributes when copying a file
utils: Make sure to preserve all attributes when copying a file

Adding --preserve=all to the 'cp' command ensures that we don't loose
any attribute related to the file during the copy.

Signed-off-by: Sebastien Boeuf <90b401417360b1924ef3f520ddee932686110f85@intel.com>

clearcontainers/agent,clearcontainers/agent