Upgrade zookeeper repository

Since the old repository is not maintained, this patch aims to change
to a repository that can be maintained for now, providing faster way
to make changes as necessary like we did in [1] and [2].

[1]: https://review.openstack.org/#/c/587173/
[2]: https://review.openstack.org/#/c/583634/

Change-Id: Ib125743b3ddc336da245bd77fa444f004f7e30c4

tests/ansible-role-requirements.yml

@@ -48,7 +48,7 @@
   scm: git
   version: master
 - name: ansible-zookeeper
-  src: https://github.com/Chillisystems/ansible-zookeeper
+  src: https://github.com/guilhermesteinmuller/ansible-zookeeper
   scm: git
   version: master
 - name: ansible-kafka