move towards user-data being binary

UrlResponse: biggest change... make readurl return bytes, making user
             know what to do with it.
util: add load_tfile_or_url for loading text file or url
      as  read_file_or_url now returns bytes

ec2_utils: all meta-data is text, remove non-obvious string translations
DigitalOcean: adjust for ec2_utils

DataSourceGCE, DataSourceMAAS: user-data is binary other fields are text.
openstack.py: read paths without decoding to text.  This is ok as paths
              other than user-data are json, and load_json will handle

load_file still returns text, and that is what most things use.

1 files changed, 3 insertions, 3 deletions

diff --git a/tests/unittests/test_datasource/test_openstack.py b/tests/unittests/test_datasource/test_openstack.py
index 81ef1546..81411ced 100644
--- a/tests/unittests/test_datasource/test_openstack.py
+++ b/tests/unittests/test_datasource/test_openstack.py
@@ -49,7 +49,7 @@ EC2_META = {
     'public-ipv4': '0.0.0.1',
     'reservation-id': 'r-iru5qm4m',
 }
-USER_DATA = '#!/bin/sh\necho This is user data\n'
+USER_DATA = b'#!/bin/sh\necho This is user data\n'
 VENDOR_DATA = {
     'magic': '',
 }
@@ -63,8 +63,8 @@ OSTACK_META = {
     'public_keys': {'mykey': PUBKEY},
     'uuid': 'b0fa911b-69d4-4476-bbe2-1c92bff6535c',
 }
-CONTENT_0 = 'This is contents of /etc/foo.cfg\n'
-CONTENT_1 = '# this is /etc/bar/bar.cfg\n'
+CONTENT_0 = b'This is contents of /etc/foo.cfg\n'
+CONTENT_1 = b'# this is /etc/bar/bar.cfg\n'
 OS_FILES = {
     'openstack/latest/meta_data.json': json.dumps(OSTACK_META),
     'openstack/latest/user_data': USER_DATA,