Find explicit target on action graph rules rather than creating a set and doing lookup
Find explicit target on action graph rules rather than creating a set and doing lookup

Summary: Follow up from D18626513

Reviewed By: philipjameson

shipit-source-id: d0c7f232b4

JoelMarcey/buck,JoelMarcey/buck,facebook/buck,nguyentruongtho/buck,nguyentruongtho/buck,Addepar/buck,Addepar/buck,JoelMarcey/buck,JoelMarcey/buck,JoelMarcey/buck,kageiit/buck,facebook/buck,JoelMarcey/buck,zpao/buck,facebook/buck,JoelMarcey/buck,JoelMarcey/buck,kageiit/buck,nguyentruongtho/buck,nguyentruongtho/buck,Addepar/buck,facebook/buck,Addepar/buck,kageiit/buck,Addepar/buck,Addepar/buck,JoelMarcey/buck,kageiit/buck,nguyentruongtho/buck,JoelMarcey/buck,zpao/buck,zpao/buck,kageiit/buck,Addepar/buck,zpao/buck,facebook/buck,JoelMarcey/buck,nguyentruongtho/buck,zpao/buck,facebook/buck,kageiit/buck,facebook/buck,Addepar/buck,kageiit/buck,Addepar/buck,Addepar/buck,Addepar/buck,Addepar/buck,Addepar/buck,zpao/buck,nguyentruongtho/buck,zpao/buck,JoelMarcey/buck,JoelMarcey/buck