Return use of build.py

build.py

+#!/usr/bin/python -B
+import os
+import logging
+
+def packages_list():
+    return [
+        ("com.unity.render-pipelines.core", os.path.join("com.unity.render-pipelines.core")),
+        ("com.unity.render-pipelines.lightweight", os.path.join("com.unity.render-pipelines.lightweight")),
+        ("com.unity.render-pipelines.high-definition", os.path.join("com.unity.render-pipelines.high-definition")),
+        ("com.unity.shadergraph", os.path.join("com.unity.shadergraph")),
+    ]
+
+def test_packages_list():
+    return [
+        "com.unity.render-pipelines.core",
+        "com.unity.render-pipelines.lightweight",
+        "com.unity.render-pipelines.high-definition",
+        "com.unity.shadergraph"
+    ]    
+
+if __name__ == "__main__":
+    import sys
+    sys.path.insert(0, os.path.abspath(os.path.join("..", "automation-tools")))
+    
+    try:
+        import unity_package_build
+        build_log = unity_package_build.setup()
+    except ImportError:
+        print "No Automation Tools found."