onnxruntime

[OpenVINO-EP] UEP v3.1 Release with OpenVINO 2021.4.1 (#9081)

* 2021.4.1 Docker and ci changes

* OV version change

* Removing Imagescaler op from the op's list

Reverting this change which was added in last
PR. Imagescaler is now deprecated. so removing
it from the supported list. Also this
op is causing regression in the performance
of the FP16 models.

Signed-off-by: MaajidKhan <n.maajidkhan@gmail.com>

* Re-writing the help message for num_of_threads

Signed-off-by: MaajidKhan <n.maajidkhan@gmail.com>

Co-authored-by: Aravind Gunda <aravindx.gunda@intel.com>