DataSourceMAAS: fix oauthlib imports

In both python2 and python3, 
This throws  "'module' object has no attribute 'oauth1'"
  $ python3 -c 'import oauthlib; oauthlib.oauth1.Client("x")'
While this works fine:
  $ python3 -c 'import oauthlib.oauth1 as oauth1; oauth1.Client("x")'

1 files changed, 3 insertions, 3 deletions

diff --git a/cloudinit/sources/DataSourceMAAS.py b/cloudinit/sources/DataSourceMAAS.py
index 35c5b5e1..6cc010b7 100644
--- a/cloudinit/sources/DataSourceMAAS.py
+++ b/cloudinit/sources/DataSourceMAAS.py
@@ -22,7 +22,7 @@ from __future__ import print_function
 
 from email.utils import parsedate
 import errno
-import oauthlib
+import oauthlib.oauth1 as oauth1
 import os
 import time
 
@@ -283,12 +283,12 @@ def check_seed_contents(content, seed):
 
 def oauth_headers(url, consumer_key, token_key, token_secret, consumer_secret,
                   timestamp=None):
-    client = oauthlib.oauth1.Client(
+    client = oauth1.Client(
         consumer_key,
         client_secret=consumer_secret,
         resource_owner_key=token_key,
         resource_owner_secret=token_secret,
-        signature_method=oauthlib.SIGNATURE_PLAINTEXT)
+        signature_method=oauth1.SIGNATURE_PLAINTEXT)
     uri, signed_headers, body = client.sign(url)
     return signed_headers