Allow operators to use their custom policy files.
Avoid maintain policy files in kolla repos, only copying
the files when an operator add their custom config.

Implements: blueprint custom-policies
Change-Id: Icf3c961b87cbc7a1f1dd2ffbfffcf271d151d862

TrivialFix

Change-Id: I65ba1828fccee52194eb2b76c4055c922236d97b

keep consistent with above

TrivialFix

Change-Id: Ia4b531eae1eb31b047b3486861c30c93abb8132d

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

Closes-bug: #1635667

Change-Id: I256a39b6241d5b506f099fb98847af9417748702

Change-Id: If83e802fbed98b41f3bc201f0083a4a4ab0852c0
Closes-Bug: #1635678

TrivialFix

Change-Id: Ib7f07b88055594e594604ed2c4471058719cba56

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: If3f30f58eae31753d34e94d030d1f37d9a1e6c47
Closes-Bug: #1635128

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