Add to setup script. (#2888)

Author: zcain117

scripts/build_torch_wheels.sh

@@ -129,7 +129,7 @@ function install_llvm_clang() {
 }
 
 function install_req_packages() {
-  sudo apt-get -y install python-pip git curl libopenblas-dev vim apt-transport-https ca-certificates wget
+  sudo apt-get -y install python-pip git curl libopenblas-dev vim apt-transport-https ca-certificates wget procps
   maybe_install_cuda
   install_bazel
 }