Add Python 3.x support in set_configs.py

Change-Id: I348c69e5411135da8434e9278a48a5777ff2a72d
Partially-Implements: blueprint python3

docker/base/Dockerfile.j2

@@ -135,6 +135,7 @@ RUN yum install -y \
         python \
         python-jinja2 \
         python-kazoo \
+        python-six \
     && yum clean all
 
     {% endif %}
@@ -172,6 +173,7 @@ RUN apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com 199369E5404BD
         python \
         python-jinja2 \
         python-kazoo \
+        python-six \
         curl \
     && apt-get clean \
     && sed -i "s|'purelib': '\$base/local/lib/python\$py_version_short/dist-packages',|'purelib': '\$base/lib/python\$py_version_short/dist-packages',|;s|'platlib': '\$platbase/local/lib/python\$py_version_short/dist-packages',|'platlib': '\$platbase/lib/python\$py_version_short/dist-packages',|;s|'headers': '\$base/local/include/python\$py_version_short/\$dist_name',|'headers': '\$base/include/python\$py_version_short/\$dist_name',|;s|'scripts': '\$base/local/bin',|'scripts': '\$base/bin',|;s|'data'   : '\$base/local',|'data'   : '\$base',|" /usr/lib/python2.7/distutils/command/install.py \

docker/base/set_configs.py

@@ -19,10 +19,10 @@ import os
 from pwd import getpwnam
 import shutil
 import sys
-import urlparse
 
 from kazoo import client as kz_client
 from kazoo import exceptions as kz_exceptions
+from six.moves.urllib import parse
 
 
 # TODO(rhallisey): add docstring.
@@ -85,7 +85,7 @@ def zk_connection(url):
 
     zk_hosts = os.environ.get("KOLLA_ZK_HOSTS")
     if zk_hosts is None:
-        components = urlparse.urlparse(url)
+        components = parse.urlparse(url)
         zk_hosts = components.netloc
     zk = kz_client.KazooClient(hosts=zk_hosts)
     zk.start()
@@ -97,7 +97,7 @@ def zk_connection(url):
 
 def zk_path_exists(zk, path):
     try:
-        components = urlparse.urlparse(path)
+        components = parse.urlparse(path)
         zk.get(components.path)
         return True
     except kz_exceptions.NoNodeError:
@@ -141,7 +141,7 @@ def copy_files(data):
 
     if is_zk_transport(source):
         with zk_connection(source) as zk:
-            components = urlparse.urlparse(source)
+            components = parse.urlparse(source)
             return zk_copy_tree(zk, components.path, dest)
 
     if os.path.isdir(source):

docker/openstack-base/Dockerfile.j2

@@ -100,7 +100,8 @@ RUN ln -s openstack-base-source/* /requirements \
         python-zaqarclient \
         python-openstackclient \
         MySQL-python \
-        python-memcached
+        python-memcached \
+        six
 ENV PATH /var/lib/kolla/venv/bin:$PATH
 
 {% endif %}