Mention `tests` in java_binary docs
Mention `tests` in java_binary docs

Summary: Add the `tests` attribute to java_binary docs

Reviewed By: ttsugriy

fbshipit-source-id: d12e479

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