Give all v2 tests the python3 compat boilerplate

v2/test/errors/test_errors.py

@@ -15,6 +15,10 @@
 # You should have received a copy of the GNU General Public License
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
 
+# Make coding more python3-ish
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
 from .. compat import unittest
 
 from ansible.parsing.yaml.objects import AnsibleBaseYAMLObject