This patch modifies tasks that are delegated to
localhost to use local connection.
Firstly, this is correct since SSH connection is not used,
and secondly, it fixes the issue when kolla-ansible is
packaged in a docker container. If the local connection
is not used, the tasks will fail because temporary data are
stored outside the container, whereas we need it to be
stored inside the container so we can read them and set_facts.

Closes-Bug: #2073370
Change-Id: I9547d5da78da30bfeea8e97056cfa9308c977098
(cherry picked from commit 84e95d2)

* Use proper balancing mode when federation is enabled.

Closes-Bug: #2058656
Change-Id: Ia81a6efc38ec2bdc1355d058c03568cf740fdac5
(cherry picked from commit 33d03a4)