Fix several problems in travis-ci

Author: Yibing Liu

.copyright.hook

@@ -99,6 +99,7 @@ def main(argv=None):
 
     retv = 0
     for filename in args.filenames:
+        if(os.path.basename(filename) == "__init__.py"): continue
         fd = io.open(filename, encoding="utf-8")
         first_line = fd.readline()
         second_line = fd.readline()

requirements.txt

@@ -1,3 +1,3 @@
 protobuf==3.5.1
 pytest-runner
-onnx==1.0
+onnx==1.1.1

setup.sh

@@ -2,6 +2,7 @@
 
 # install python dependencies
 if [ -f "requirements.txt" ]; then
+    apt-get install -y protobuf-compiler libprotoc-dev
     pip install -r requirements.txt
 fi
 if [ $? != 0 ]; then

variables.py

@@ -19,9 +19,9 @@
 def paddle_variable_to_onnx_tensor(paddle_var_name, block):
     # TODO(varunarora): Need to do this only in the case of VarType.LOD_TENSOR.
     paddle_var = block.var(paddle_var_name)
-    return helper.make_tensor_value_info(
-        paddle_var_name, PADDLE_TO_ONNX_DTYPE[paddle_var.dtype],
-        paddle_var.shape)
+    return helper.make_tensor_value_info(paddle_var_name,
+                                         PADDLE_TO_ONNX_DTYPE[paddle_var.dtype],
+                                         paddle_var.shape)
 
 
 PADDLE_TO_ONNX_DTYPE = {