Fixes refreshing of smart proxies against Foreman, since the PUT request data defaulted to `{}`. This causes the oauth gem to form encode the empty hash data, overriding the Content-Type to application/ x-www-form-urlencoded and the request is rejected by Foreman with a 415 HTTP response.
Revert default rest_v3 request data to nil (#439)
Fixes refreshing of smart proxies against Foreman, since the PUT
request data defaulted to `{}`. This causes the oauth gem to form
encode the empty hash data, overriding the Content-Type to application/
x-www-form-urlencoded and the request is rejected by Foreman with a 415
HTTP response.