[hack] Add --logname flag
[hack] Add --logname flag

Summary: So people can do things like `cat $(hh_client --logname) | pastebin`

Reviewed By: @dlreeves

Differential Revision: D2497222

cesarandreu/flow,d14b3l/flow,facebook/flow,AgentME/flow,d14b3l/flow,gabro/flow,samwgoldman/flow,samwgoldman/flow,JonathanUsername/flow,fletcherw/flow,fletcherw/flow,MichaelDeBoey/flow,claudiopro/flow,ylu1317/flow,mroch/flow,AprilArcus/flow,d14b3l/flow,ylu1317/flow,chenglou/flow,claudiopro/flow,jdelStrother/flow,graue/flow,nmote/flow,shiftcars/flow,AprilArcus/flow,JonathanUsername/flow,MichaelDeBoey/flow,jeffmo/flow,TiddoLangerak/flow,OCamlPro/flow,chenglou/flow,cesarandreu/flow,shiftcars/flow,TiddoLangerak/flow,fletcherw/flow,claudiopro/flow,shiftcars/flow,nmote/flow,jamesgpearce/flow,AprilArcus/flow,gabelevi/flow,AprilArcus/flow,ylu1317/flow,cesarandreu/flow,cesarandreu/flow,nmote/flow,Eyyub/flow,jgrund/flow,jgrund/flow,facebook/flow,samwgoldman/flow,nmote/flow,shiftcars/flow,jdelStrother/flow,graue/flow,AprilArcus/flow,graue/flow,Eyyub/flow,jamesgpearce/flow,jgrund/flow,jgrund/flow,mroch/flow,popham/flow,gabelevi/flow,OCamlPro/flow,jamesgpearce/flow,jamesgpearce/flow,nmote/flow,OCamlPro/flow,jgrund/flow,TiddoLangerak/flow,Eyyub/flow,gabelevi/flow,chenglou/flow,gabro/flow,jdelStrother/flow,popham/flow,facebook/flow,mroch/flow,ylu1317/flow,d14b3l/flow,popham/flow,ForbesLindesay/flow,MichaelDeBoey/flow,graue/flow,AgentME/flow,mroch/flow,mroch/flow,ForbesLindesay/flow,TiddoLangerak/flow,AgentME/flow,JonathanUsername/flow,chenglou/flow,graue/flow,chenglou/flow,Eyyub/flow,OCamlPro/flow,samwgoldman/flow,fletcherw/flow,ylu1317/flow,samwgoldman/flow,graue/flow,AgentME/flow,jdelStrother/flow,JonathanUsername/flow,jeffmo/flow,JonathanUsername/flow,d14b3l/flow,gabro/flow,jeffmo/flow,jamesgpearce/flow,facebook/flow,popham/flow,jeffmo/flow,chenglou/flow,mroch/flow,samwgoldman/flow,facebook/flow,facebook/flow,facebook/flow,ForbesLindesay/flow,ForbesLindesay/flow,fletcherw/flow,AprilArcus/flow,jgrund/flow,JonathanUsername/flow,MichaelDeBoey/flow,AgentME/flow,jamesgpearce/flow,nmote/flow,jeffmo/flow,gabelevi/flow,popham/flow,mroch/flow,nmote/flow,shiftcars/flow,d14b3l/flow,gabro/flow,JonathanUsername/flow,jdelStrother/flow,gabro/flow,jdelStrother/flow,samwgoldman/flow,popham/flow,MichaelDeBoey/flow,jamesgpearce/flow,gabelevi/flow,gabro/flow,fletcherw/flow,popham/flow,TiddoLangerak/flow,gabelevi/flow,gabelevi/flow,ForbesLindesay/flow,claudiopro/flow,shiftcars/flow,ForbesLindesay/flow,jeffmo/flow,claudiopro/flow