fix(aiokafka): change aiokafka version to 0.6.0

Change-Id: Ie61046eb869c93019f78424fdc3d18faa70cbc57
Signed-off-by: bravof <fbravo@whitestack.com>
(cherry picked from commit 4509db85e33d7be00c12548a1d1d93cc94c6ebab)
diff --git a/setup.py b/setup.py
index 37a2566..3eeb9e5 100644
--- a/setup.py
+++ b/setup.py
@@ -51,7 +51,7 @@
     packages=[_name],
     package_dir={_name: _name},
     install_requires=[
-        "aiokafka==0.4.*",
+        "aiokafka==0.6.0",
         "requests==2.18.*",
         "python-keystoneclient==3.15.*",
         "six==1.11.*",