LU-16724 ptlrc: ptlrpc: extend sec bulk functionality

LU-16724 ptlrc: ptlrpc: extend sec bulk functionality

Features such as client-side-data-compression and unaligned
direct I/O need page/buffer pools for good performance.

This patch extends sec bulk functionality to allocate different
size buffers. Memory shrinking and other usefull features
should still work as expected.

Signed-off-by: Artem Blagodarenko <ablagodarenko@ddn.com>
Change-Id: I929b4dfdcb0e8197f3804629b000af0d4bd6f2a0
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/52335
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>