Add tool to print out yaml file to js format

Change-Id: Ic98e3075c42b70b9430ca500502ef4f566b749ac

tools/ci/yaml2js

@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+
+import json
+import io
+import sys
+import yaml
+
+
+def main(args=None):
+    args = args or sys.argv[1:]
+
+    if args:
+        input_stream = io.open(args[0], 'rb')
+        args = args[1:]
+    else:
+        input_stream = sys.stdin
+
+    with input_stream:
+        data = yaml.load(input_stream)
+
+    json.dump(data, sys.stdout, indent=4)
+
+
+if __name__ == '__main__':
+    main()