sensu-ansible/docs/remote_plugins.md

Remote Plugin Deployment

Deployment of remote plugins, via Ruby Gems, is exposed via the sensu_remote_plugins variable.
By default this variable evaluates to ~ (null). It should be set as a YAML list, like so:

sensu_remote_plugins:
  - graphite
  - process-checks

This will install the graphite and process-checks plugins from sensu-plugins.io.

Specific versions of plugins can also be defined, as shown below:

sensu_remote_plugins:
  - graphite
  - process-checks:0.0.6

As with any Ansible variable, the sensu_remote_plugins list can be defined where you see fit!