Summary:
Reenables dynamicconfig loading with eden backingstore. Previously it
broke edenfs-windows-release, but we believe the
opensource/fbcode_builder/manifests/eden tweak has fixed it.

Reviewed By: xavierd

Differential Revision: D29561192

fbshipit-source-id: 775dd21d177f3baa09b0192e7d3f7231008c3766