Do not run VCS commands when it's not enabled in configuration
Do not run VCS commands when it's not enabled in configuration

Summary: VCS commands are executed even when gathering them is not enabled in the configuration. For example, every command in Buck repository triggers hg commands.

Reviewed By: philipjameson

fbshipit-source-id: 7c0a0914ae

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