parameters written as fully expanded YAML dictionaries

Fix jinja2 syntax for remove unnecessary white spaces or line breaks

WIP - rolling mongodb upgrades

Rename folders directory to folder to match docker/plays/forum.yml

Full rolling updates of a cluster

Define ALTERNATE_WORKER_QUEUES

Enabling SSL for insights

Fix jinja2 syntax for remove unnecessary white spaces or line breaks …

YAML style parameter passing

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

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

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

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

Quote mode strings

Ansible turned 0640 into 420 and 0750 into 488, only one of which are
valid file modes.  Quotes prevent it from doing so too early.
Fixes d2f1595c.

SSH needs this script to be executable

During the edxapp refactor, three tasks were combined, but the modes
were all squished to 0644

Remove cycle from server-utils

Improve docs.

Correct credentials URL root protocol

OIDC doesn't work out of the box if the redirect URI uses http.

Newer versions have been released.

This will connect to a cluster, find the hidden secondaries and upgrade
them to the current version specified in the mongo_3_0 play.

This required the creation of a new library module since our two current
ones return rs.status and call replSetReconfig, but neither return
rs.config, and rs.config is what tells you if a host is hidden and the
priority, which are needed for this.

More cleanup from this deprecation

http://docs.mongodb.org/manual/release-notes/3.0

SERVER-22970  Background index build produces an index with mismatched
index keys and documents

This only worked by coincidence before

We were implicitly relying on mongo to return the list of members in
their _id order, which is absurd and I have no idea how we didn't catch
it previously.

We could do a little list comprehension to pull out the member with the
same _id,  but it seemed easier to just sort both lists and retain the
original intent.