When a subscription is created using cloudformation:
```
"ProfileChangedSubscription": {
      "Type": "AWS::SNS::Subscription",
      "Properties": {
        "Endpoint": {
          "Fn::GetAtt": [
            "ProfileChangedQueue",
            "Arn"
          ]
        },
        "Protocol": "sqs",
        "FilterPolicy": {
          "eventType": [
            "created"
          ]
        },
        "TopicArn": {
          "Fn::ImportValue": {
            "Fn::Sub": "${ProfilesProfilePublishStack}-ProfileChangedTopic"
          }
        }
      }
    }
```

The specified subscription filter policy is not created. When I run `get-subscription-attributes`, I get information about non-existing filter policy:

```
{
    "Attributes": {
        "TopicArn": "arn:aws:sns:us-east-1:000000000000:profile-changed-topic",
        "Endpoint": "arn:aws:sqs:us-east-1:000000000000:profile-changed-queue",
        "Protocol": "sqs",
        "SubscriptionArn": "arn:aws:sns:us-east-1:000000000000:profile-changed-topic:936a58be-525b-4228-bfdb-c4b2f6048e8c",
        "FilterPolicy": "None"
    }
}
```
MyFunc:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: %s
      Handler: index.handler
      Runtime:
        Ref: LambdaRuntime
      InlineCode: |
        def handler(event, context):
            return {'hello': 'world'}
"""
TEST_TEMPLATE_5 = """
AWSTemplateFormatVersion: 2010-09-09
Resources:
  S3Setup:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: test-%s
""" % short_uid()
TEST_ARTIFACTS_BUCKET = 'cf-artifacts'
TEST_ARTIFACTS_PATH = 'stack.yaml'
TEST_TEMPLATE_6 = """
AWSTemplateFormatVersion: 2010-09-09
Resources:
  NestedStack:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: http://localhost:4572/%s/%s
""" % (TEST_ARTIFACTS_BUCKET, TEST_ARTIFACTS_PATH)
def bucket_exists(name):