Add python3 compat boilerplate to executor

v2/ansible/executor/HostLogManager.py

@@ -15,7 +15,11 @@
 # You should have received a copy of the GNU General Public License
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
 
-class HostLogManager(object):
+# Make coding more python3-ish
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+class HostLogManager:
 
    def __init__(self):
        pass