Summary:
Images in the network plugin are rarely displayed in the network plugin, as it tries to use the public url to preview it. However, that won't if the endpoint is behind authentication, idempotent, etc. This diff changes the behavior to instead send the network body to flipper and use that to preview.
Changelog: [Network] Fixed image preview
Reviewed By: jknoxville, passy
Differential Revision: D23370743
fbshipit-source-id: 0070e9e38c10a5761b9f7190467e26f01a7b2471
2f7a84115c