py3: pass raw entries to LDIFWriter

LDIFWriter.unparse() expects the scalar values of the attributes
of the entries to be bytes as it applies a byte regular expression
to check whether to base64-encode the values or not. Previously,
we were passing the scalar attribute values as strings which
was breaking the LDIFWriter.unparse() exectution.

https://pagure.io/freeipa/issue/7131

Reviewed-By: Felipe Barreto <fbarreto@redhat.com>

ipatests/pytest_plugins/integration/tasks.py

@@ -1045,7 +1045,7 @@ def _entries_to_ldif(entries):
     io = StringIO()
     writer = LDIFWriter(io)
     for entry in entries:
-        writer.unparse(str(entry.dn), dict(entry))
+        writer.unparse(str(entry.dn), dict(entry.raw))
     return io.getvalue()