LU-13814 clio: add cl_dio_pages_complete

LU-13814 clio: add cl_dio_pages_complete

This is the equivalent of cl_page_complete for regular
cl_pages.  This is used in a patch to come shortly.

Signed-off-by: Patrick Farrell <pfarrell@whamcloud.com>
Change-Id: I9fc993e57d1607a6ad5cba27f896e0eb2a838218
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/52111
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Qian Yingjin <qian@ddn.com>
Reviewed-by: Marc Vef <mvef@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>