[net-mgmt/phpfpm_exporter_lusitaniae] Add rc service

Summary:
rc service with configuration matching D3502 variables.

Ref T1999.

Test Plan: Deployed on WindRiver

Reviewers: dereckson

Reviewed By: dereckson

Maniphest Tasks: T1999

Differential Revision: https://devcentral.nasqueron.org/D3509