OPS-1433 grant-ssh access job should fail if user has no keys

Added unsuable_password option to manage_edxapp_users_and_groups.yml

Passing the correct flag for unusable_password

ECOM-4609

use YAML syntax

Small config clarification

OPS-1593 As an operator, I want sudo_user converted to become user in…

write ansible tasks with proper YAML syntax

fix the file/template mode while using with_items

Sigh

write ansible tasks with YAML syntax

OPS-1593 As an operator, I want sudo_user converted to become user in roles and plays, for compatibility with Ansible 2.x

ECOM-4729

use YAML dictionaries for ansible tasks

update ansible-role templates to use correct variable

use fully expanded YAML dictionaries for ansible tasks

fix bare variables is deprecated warning in 2.x

rewrite edx ansible role

Convert to the yaml syntax for ansible tasks.

Fix all failing ansible syntax checks in roles when we move to Ansible 2.0

There are still a lot of warnings that need to be fixed but these
were the only failures.

parameters written as fully expanded YAML dictionaries

convert sudo_user to become user in roles for Ansible 2.x

OPS-1593 As an operator, I want sudo_user converted to become user in…