Fix the CPU Python tf-nightly 3.5 breakage.

PiperOrigin-RevId: 322266144
Change-Id: Iba5c346ca2b1af9ffaed3447722178d9c9684708
diff --git a/tensorflow/tools/ci_build/release/ubuntu_16/cpu_py35_full/nightly_release.sh b/tensorflow/tools/ci_build/release/ubuntu_16/cpu_py35_full/nightly_release.sh
index 06ae6e9..16f1e75 100644
--- a/tensorflow/tools/ci_build/release/ubuntu_16/cpu_py35_full/nightly_release.sh
+++ b/tensorflow/tools/ci_build/release/ubuntu_16/cpu_py35_full/nightly_release.sh
@@ -32,7 +32,7 @@
 yes "" | "$PYTHON_BIN_PATH" configure.py
 
 # Build the pip package
-bazel build --config=release_cpu_linux tensorflow/tools/pip_package:build_pip_package
+bazel build --config=release_cpu_linux --host_force_python=PY3 tensorflow/tools/pip_package:build_pip_package
 
 ./bazel-bin/tensorflow/tools/pip_package/build_pip_package pip_pkg --cpu --nightly_flag