unbreak build
unbreak build

Summary:
recent name change in folly caused this to break. I encountered while
building fake-wedge-agent

Reviewed By: boryas

Differential Revision: D5948252

fbshipit-source-id: 594fdfc222c0bb4c43a62b87b10579ba9483a2c8

peterlei/fboss,peterlei/fboss,peterlei/fboss,peterlei/fboss