Separating quantization test from distributed_test (#63058)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63058
Dedicating separate tests for different quantization methods. Currently supporting FP16 method.
ghstack-source-id: 136499767
Test Plan: uck test mode/dev //caffe2/test/distributed/algorithms/quantization:quantization_gloo_fork -- name_of_the_test
Reviewed By: wanchaol
Differential Revision: D30142580
fbshipit-source-id: 3aacec1a231a662067d2b48c001f0c69fefcdd60
