Allow passing a list to tf_var_file (#65)

Author: juliocc

tftest.py

@@ -150,7 +150,12 @@ def parse_args(init_vars=None, tf_vars=None, targets=None, **kw):
   if targets:
     cmd_args += [("-target={}".format(t)) for t in targets]
   if kw.get('tf_var_file'):
-    cmd_args.append('-var-file={}'.format(kw['tf_var_file']))
+    tf_var_file = kw['tf_var_file']
+    if isinstance(tf_var_file, list):
+      for x in tf_var_file:
+        cmd_args.append('-var-file={}'.format(x))
+    else:
+      cmd_args.append('-var-file={}'.format(tf_var_file))
   return cmd_args