staging/lustre/llite: deny non-root user for changelog operations
staging/lustre/llite: deny non-root user for changelog operations

To avoid potential security problems, non-privileged users should
have no permission to run 'lfs changelog' & 'lfs changelog_clear'.

Signed-off-by: Niu Yawei <9a4306993a9b05dce7bd8a5e926759eea151be9f@intel.com>
Reviewed-on: http://review.whamcloud.com/14280
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6415
Reviewed-by: Lai Siyao <3de0ff1f562be7153cd883e1be3e88580ec32e8b@intel.com>
Reviewed-by: Jinshan Xiong <4f9c0b864b7f9eb8a22fd0e8ad685c34bbc01268@intel.com>
Signed-off-by: Oleg Drokin <65b2ca07820e940f66d8901813c729ec10a548f5@intel.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs