Rake task to publish all people to publishing-api
Rake task to publish all people to publishing-api

This commit will publish all the people to publishing-api so
publishing-api can have the fields `full_name` and `privy_counsellor`.

Trello: https://trello.com/c/32LO2xT8

alphagov/whitehall,alphagov/whitehall,alphagov/whitehall,alphagov/whitehall