wrapper: fix file open modes

Commit e63b489 was all wrong.

Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com>

Author: nyoxi

wrapper/virt-v2v-wrapper.py

@@ -179,7 +179,7 @@ def get_logs(self):
     def handle_finish(self, data, state):
         """ Handle finish after successfull conversion """
         # Store JSON into annotation
-        with open('/data/vm/{}.json'.format(data['vm_name']), 'b') as f:
+        with open('/data/vm/{}.json'.format(data['vm_name']), 'rb') as f:
             vm_data = f.read().decode('utf-8')
         patch = [{
                 "op": "add",
@@ -931,7 +931,7 @@ def _is_iso_domain(self, path):
         """
         try:
             logging.debug('_is_iso_domain check for %s', path)
-            with open(path, 'r', 'b') as f:
+            with open(path, 'rb') as f:
                 for line in f:
                     if line.rstrip() == b'CLASS=Iso':
                         return True