LU-14488 o2ib: Use rdma_connect_locked if it is defined

LU-14488 o2ib: Use rdma_connect_locked if it is defined

rdma_connect_locked() is added in the upstream kernel 5.10 and
MOFED-5.2-2. After that, it is not allowed to call rdma_connect()
in RDMA CM event handler; rdma_connect_locked() must be used
instead.

This commit adds configure checks to detect whether
rdma_connect_locked() is available and updates the event handler
to call the correct function.

Lustre-change: https://review.whamcloud.com/41887
Lustre-commit: 60d55e42ed9e043341790bf7624627c93cc99200

Test-Parameters: trivial
Signed-off-by: Sergey Gorenko <sergeygo@nvidia.com>
Change-Id: I8068d04810bf6f0200292a55f3fdcea8c71d44c1
Reviewed-on: https://review.whamcloud.com/41887
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/41999
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>