Update to OpenPose v1.7.0 Python3 TensorFlow2

[cliarie]

fix all paths and indents remove openpose scale and resolution so that tensorflow will not abort changed all python2 to python3 e.g d.iteritems() to iter(d.items()) removed dictionary deletion from iteration -- deleted afterwards updated openpose key "pos_keypoints" to "pose_keypoints_2d"

[Zju-George]

You are a life saver. @cliarie

[Zju-George]

So have you successfully run the code? @cliarie

[cliarie]

So have you successfully run the code? @cliarie

Yep I ran my patch and it worked fine for me @Zju-George