RDMA/rtrs-clt: Rename rtrs_clt_sess to rtrs_clt_path

RDMA/rtrs-clt: Rename rtrs_clt_sess to rtrs_clt_path

BugLink: https://bugs.launchpad.net/bugs/1990162
[ Upstream commit caa84d95c78f35168847e2ab861a3a7f87033d36 ]

rtrs_clt_sess is used for paths and not sessions on the client side. This
creates confusion so let's rename it to rtrs_clt_path. Also, rename
related variables and functions.

Coccinelle is used to do the transformations for most of the occurrences
and remaining ones were handled manually.

Link: https://lore.kernel.org/r/20220105180708.7774-4-jinpu.wang@ionos.com
Signed-off-by: Vaishali Thakkar <vaishali.thakkar@ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>