[validations] Add missing required packages (#1656)

Author: atalman

.github/scripts/validate_test_ops.sh

@@ -18,7 +18,7 @@ retry git clone ${BRANCH} --depth 1 https://github.com/pytorch/pytorch.git
 retry git submodule update --init --recursive
 pushd pytorch
 
-pip install expecttest pyyaml jinja2 packaging
+pip install expecttest numpy pyyaml jinja2 packaging xmlrunner hypothesis unittest-xml-reporting
 
 # Run test_ops validation
 export CUDA_LAUNCH_BLOCKING=1