Description of problem:

We're running Python SDK (ovirt-engine-sdk-python) ver 4.1.4 and we're having some issues getting values that contain accents. For example, this snippet fails, because one of the returned values contains a accent:

   import ovirtsdk4 as sdk
   import ovirtsdk4.types as types

   # Create the connection to the server:
   connection = sdk.Connection(
       url='https://fqdn/ovirt-engine/api',
       username='...',
       password='...',
       ca_file='...',
       debug=True,
   )

   users_service = connection.system_service().users_service()
   users = users_service.list()

   connection.close()

Version-Release number of selected component (if applicable):

SDK 4.1.4

How reproducible:

Always

Steps to Reproduce:
1. Create a user which has an accent in their name or surname.
2. Run the snippet above.

Actual results:

The snippet above fails in the "users = users_service.list()" line, because one of the records has an accent (ó).

The trace is:
Traceback (most recent call last):
 File "lista_users", line 23, in <module>
   users = users_service.list()
 File
"/home/ovirt/prueba/ejemplo2/lib/python2.7/site-packages/ovirtsdk4/services.py",
line 22155, in list
   return self._internal_get(headers, query, wait)
 File
"/home/ovirt/prueba/ejemplo2/lib/python2.7/site-packages/ovirtsdk4/service.py",
line 202, in _internal_get
   return future.wait() if wait else future
 File
"/home/ovirt/prueba/ejemplo2/lib/python2.7/site-packages/ovirtsdk4/service.py",
line 53, in wait
   return self._code(response)
 File
"/home/ovirt/prueba/ejemplo2/lib/python2.7/site-packages/ovirtsdk4/service.py",
line 197, in callback
   return self._internal_read_body(response)
 File
"/home/ovirt/prueba/ejemplo2/lib/python2.7/site-packages/ovirtsdk4/service.py",
line 310, in _internal_read_body
   return reader.Reader.read(response.body)
 File
"/home/ovirt/prueba/ejemplo2/lib/python2.7/site-packages/ovirtsdk4/reader.py",
line 297, in read
   cursor = xml.XmlReader(io.BytesIO(source.encode('utf-8')))
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position
1899: ordinal not in range(128)

Expected results:

It should handle the accent situation.

Additional info:

Using version 4.1.3 doesn't throw the exception. It's only version 4.1.4 that fails.