Add newrelic mongo monitoring playbook

Description

This adds a playbook to deploy newrelic monitoring of a mongodb installation.

*JIRA tickets*:

*Dependencies*: None

*Sandbox URL*: TBD

*Merge deadline*: "None"

*Testing instructions*:

1. deploy a multi-node mongodb installation
1. configure valid newrelic vars overriding the new defaults here
1. run this playbook against the mongo node instances
1. verify that newrelic mongodb monitoring agent is set up and reporting data
to newrelic for the nodes.

See also https://github.com/edx-olive/configuration/pull/15 where this new
playbook was used for a client's gingko Open edX instance.

*Author notes and concerns*:

*Reviewers*

  • [ ] @itsyejd

  • [ ] edX reviewer[s] TBD

*Settings*
```yaml
```

Assignee

Jill Vogel

Reporter

Open Source Pull Request Bot

Labels

Contributor Name

Samuel Walladge

Repo

edx/configuration

Customer

Epic Link

None

OSCM Assignee

None

Platform Map Area (Levels 1 & 2)

Developer Experiences

Platform Map Area (Levels 3 & 4)

None

Blended Hour Utilization Percentage

None

Priority

Unset
Configure