Downgrade DxStep Precondition to fine
Downgrade DxStep Precondition to fine

Summary: Pull Request resolved: https://github.com/facebook/buck/pull/1976

Reviewed By: asp2insp

Pulled By: asp2insp

fbshipit-source-id: cda48c7302

Addepar/buck,facebook/buck,Addepar/buck,romanoid/buck,rmaz/buck,shs96c/buck,nguyentruongtho/buck,Addepar/buck,zpao/buck,romanoid/buck,zpao/buck,romanoid/buck,kageiit/buck,Addepar/buck,Addepar/buck,shs96c/buck,facebook/buck,facebook/buck,brettwooldridge/buck,brettwooldridge/buck,JoelMarcey/buck,brettwooldridge/buck,SeleniumHQ/buck,shs96c/buck,SeleniumHQ/buck,rmaz/buck,nguyentruongtho/buck,shs96c/buck,brettwooldridge/buck,Addepar/buck,SeleniumHQ/buck,nguyentruongtho/buck,rmaz/buck,romanoid/buck,brettwooldridge/buck,SeleniumHQ/buck,JoelMarcey/buck,JoelMarcey/buck,facebook/buck,SeleniumHQ/buck,kageiit/buck,nguyentruongtho/buck,Addepar/buck,SeleniumHQ/buck,brettwooldridge/buck,romanoid/buck,SeleniumHQ/buck,JoelMarcey/buck,rmaz/buck,romanoid/buck,brettwooldridge/buck,shs96c/buck,brettwooldridge/buck,Addepar/buck,kageiit/buck,brettwooldridge/buck,SeleniumHQ/buck,JoelMarcey/buck,shs96c/buck,brettwooldridge/buck,rmaz/buck,zpao/buck,nguyentruongtho/buck,romanoid/buck,rmaz/buck,zpao/buck,JoelMarcey/buck,kageiit/buck,JoelMarcey/buck,zpao/buck,Addepar/buck,rmaz/buck,romanoid/buck,romanoid/buck,JoelMarcey/buck,romanoid/buck,brettwooldridge/buck,shs96c/buck,shs96c/buck,rmaz/buck,Addepar/buck,brettwooldridge/buck,SeleniumHQ/buck,SeleniumHQ/buck,shs96c/buck,romanoid/buck,zpao/buck,SeleniumHQ/buck,JoelMarcey/buck,rmaz/buck,kageiit/buck,facebook/buck,nguyentruongtho/buck,Addepar/buck,rmaz/buck,romanoid/buck,shs96c/buck,JoelMarcey/buck,JoelMarcey/buck,facebook/buck,SeleniumHQ/buck,JoelMarcey/buck,shs96c/buck,JoelMarcey/buck,Addepar/buck,shs96c/buck,rmaz/buck,Addepar/buck,facebook/buck,kageiit/buck,nguyentruongtho/buck,rmaz/buck,rmaz/buck,shs96c/buck,SeleniumHQ/buck,brettwooldridge/buck,kageiit/buck,zpao/buck,romanoid/buck