Add New Relic Application Agent to Inventory-next

[pjsharpe07]

User Story

As an inventory administrator, I want inventory configured with New Relic so that I can can monitor and evaluate blocking requests/weak points in the system.

Acceptance Criteria

• GIVEN the inventory playbook is run on staging
  WHEN I look at New Relic UI
  THEN I can see the different applications and machines
  AND a breakdown of the different components of the application

Background

We currently have language-specific playbooks to deploy and configure New Relic for applications. However, this has some deficiencies. The platform has to know details about the application, environments, app names, configuration settings. The platform has to know where to install hooks within the application (wsgi, worker scripts, etc). The platform might install conflicting versions of dependencies, outside of application pinned dependencies. The platform installing New Relic might cause an extra restart, prolonging any service disruption during deploy.

Related to #174.

Security Considerations (required)

None, New Relic is already installed, just tweaking the configuration.

Sketch

[jbrown-xentity]

@pjsharpe07 you'll want to examine the following PR's for catalog-next to do for inventory:

• Catalog-next New Relic #2317
• Feature/new relic catalog.data.gov#149

[pjsharpe07]

I believe we still need two more edits to enable the role for inventory-next and datagov_in_service.

[jbrown-xentity]

The former link is to the old new relic implementation, which we will leave as is until inventory-next is live and replaced inventory-classic on production. And the second one can be removed, it's not being utilized.

[pjsharpe07]

The inventory-next part of this ticket