LU-13814 clio: add cp_inode to page allocation

LU-13814 clio: add cp_inode to page allocation

cp_inode can be set correctly during page allocation,
rather than after.  This is a prelude to moving cp_inode to
the osc_transfer_page, but that's better done in a separate
patch.

Lustre-change: https://review.whamcloud.com/52208
Lustre-commit: TBD (from f2afaf4eb10d70c36ad6bdbc2def66bee4fcdc23)
Signed-off-by: Patrick Farrell <pfarrell@whamcloud.com>
Signed-off-by: Artem Blagodarenko <ablagodarenko@ddn.com>
Change-Id: I509f6cfbae8e5a6ec6b07c8253d68f6dd2794e59
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/52557
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>