LU-18810 misc: filename encoding for remaining files

LU-18810 misc: filename encoding for remaining files

Apply filename encoding feature to the remaining files.
Also, sanity.sh test_170b is added to verify this feature.

This is a port of
Lustre-change: https://review.whamcloud.com/58125
Lustre-commit: TBD (from a9aac92b92ce9b7bb115da6b3d5bc513240972c8)
EX-bug-id: EX-11415

Signed-off-by: Emoly Liu <emoly@whamcloud.com>
Change-Id: I8b7a007844e068bd0db7ee9c2bc0309ccd5c656a
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/58435
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>