Previous version of keystone reconfigure fails at adding fernet
components to fact variable "keystone_item".
Ansible can not create fact variable using newly created variable
in a same task.

This patch set split this task into two tasks, first create variable
containing fernet components, then merge it to "keystone_item".

Change-Id: I15571ab20d6104d30350e8b922401b462336fca0
Closes-Bug: #1636047

TrivialFix

Change-Id: I4315d63d29dafd0483898e64f424576c0342b7c0

The next release of ARA (0.10.0) contains a change to the callback
plugin location that /should/ be backwards compatible but let's
control the update to the newer version to be safe and avoid
breaking the gate needlessly.

Change-Id: I32176166e8ebcbfdf0baa8bd7ec30e5ec6d795a5

Correct relative path of kolla root directory after vagrant environment was
moved from dev/vagrant to contrib/dev/vagrant.

Closes-Bug: #1635329

Change-Id: Ib13a6123f34d69884e27029f5144ff1ad165e73e

Closes-Bug: #1635322

Change-Id: I6f3351d098dfd9a7c1c3e3e8b213134284f823f9

Ansible 2.0 has deprecated the 'ssh' from ansible_ssh_user to become ansible_user.

Change-Id: I15813f638accaa6a31f75dad0b854814264ac493
Closes-Bug: #1635145

Change-Id: Idbf10404606dd17be334056c95b6e5f9ae800495
Partial-Bug: #1631503

Change-Id: I6af9935e46dcd3c2f9ea18545e059e055b840d90
Closes-bug: #1634223

Change-Id: Ifa72d352e65c834afa078a7b08a7582155e6298b
Closes-bug: #1635032

bandit is a security linter and can be made voting now. Instead of
starting another virtual machine, run it as part of the generic linting
target which is pep8.

Change-Id: I6a8f7aa2b60bd96d55b37b6cc2a371069d6d5e6a

TrivialFix

Change-Id: I817aa52caf56b7d54b266e553db6db1ceb38b773
Signed-off-by: Jeffrey Zhang <zhang.lei.fly@gmail.com>

The gate jobs are using Xenial as the base OS so it seems we should be
using the same non-infra repos as our base image.

TrivialFix

Change-Id: I6e5d27364054c474c16120a3195cae819861c8a1

The 'addUser' shell helper is DEPRECATED. Use 'createUser' instead.
TrivialFix

Change-Id: Ib8c7a8971f46328a666cf63f1914fe50c7067064