GitLab

* start from 1.12, torch_ccl is renamed as oneccl_bindings_for_pytorch and should import it before use
Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* add doc for perf_train_cpu_many
Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* update doc
Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>