LU-16569 llite: fix file attribute operation

LU-16569 llite: fix file attribute operation

The file attribute should be filtered. Also the
kernel removed the option to propagate i_flags
from vfs_inode to ext4_inode_info since commit:
v4.11-rc3-45-g38eae95ddc ("ext4: Remove ext4_get_inode_flags()")
This makes file attribute flags cannot be persisted
after MDS failover.

Signed-off-by: Yang Sheng <ys@whamcloud.com>
Change-Id: I12dc70daec5297f54b83e6e71474547b014f9f49
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/58693
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Li Dongyang <dongyangli@ddn.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>