Refactor installed plugin props passing
Refactor installed plugin props passing

Summary:
Left this out from diff at the bottom of the stack to
keep it a bit smaller.

Reviewed By: jknoxville

Differential Revision: D18272165

fbshipit-source-id: a2b0826e268b737341e2ef1c0f96dde32491237f

facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper