Switch buck project default to not build targets unless --build is defined
Switch buck project default to not build targets unless --build is defined

Summary:
Building all modules when doing buck proejct is not a good decision in retrospect. If one wants to see generated code, they are better off building the modules they need and not waiting for all of them in the wrong moment.
The solution is just flipping the default, and requiring someone to add `--build` when they want this. I kept the original flag to now break people's commands in the meantime.

Test Plan: Run `buck project <target>` with and without --build, see that nothing is built without `--build` mentioned.

fbshipit-source-id: a9fe298

nguyentruongtho/buck,shs96c/buck,grumpyjames/buck,vschs007/buck,Addepar/buck,kageiit/buck,darkforestzero/buck,sdwilsh/buck,JoelMarcey/buck,romanoid/buck,romanoid/buck,dsyang/buck,justinmuller/buck,Addepar/buck,daedric/buck,darkforestzero/buck,SeleniumHQ/buck,rmaz/buck,k21/buck,vschs007/buck,marcinkwiatkowski/buck,davido/buck,LegNeato/buck,sdwilsh/buck,zpao/buck,k21/buck,JoelMarcey/buck,illicitonion/buck,clonetwin26/buck,dsyang/buck,grumpyjames/buck,brettwooldridge/buck,zhan-xiong/buck,SeleniumHQ/buck,SeleniumHQ/buck,marcinkwiatkowski/buck,facebook/buck,rmaz/buck,facebook/buck,shs96c/buck,k21/buck,illicitonion/buck,zpao/buck,justinmuller/buck,raviagarwal7/buck,robbertvanginkel/buck,nguyentruongtho/buck,sdwilsh/buck,shs96c/buck,kageiit/buck,romanoid/buck,Addepar/buck,sdwilsh/buck,Addepar/buck,shybovycha/buck,dsyang/buck,clonetwin26/buck,raviagarwal7/buck,romanoid/buck,brettwooldridge/buck,zhan-xiong/buck,justinmuller/buck,justinmuller/buck,vschs007/buck,clonetwin26/buck,robbertvanginkel/buck,sdwilsh/buck,zhan-xiong/buck,rmaz/buck,LegNeato/buck,shybovycha/buck,clonetwin26/buck,clonetwin26/buck,daedric/buck,SeleniumHQ/buck,sdwilsh/buck,shybovycha/buck,JoelMarcey/buck,k21/buck,ilya-klyuchnikov/buck,shs96c/buck,shybovycha/buck,zhan-xiong/buck,JoelMarcey/buck,darkforestzero/buck,shybovycha/buck,shybovycha/buck,justinmuller/buck,raviagarwal7/buck,darkforestzero/buck,robbertvanginkel/buck,robbertvanginkel/buck,davido/buck,davido/buck,Addepar/buck,daedric/buck,zpao/buck,sdwilsh/buck,sdwilsh/buck,illicitonion/buck,ilya-klyuchnikov/buck,OkBuilds/buck,brettwooldridge/buck,romanoid/buck,robbertvanginkel/buck,LegNeato/buck,sdwilsh/buck,zhan-xiong/buck,Addepar/buck,zhan-xiong/buck,daedric/buck,JoelMarcey/buck,marcinkwiatkowski/buck,ilya-klyuchnikov/buck,robbertvanginkel/buck,grumpyjames/buck,zhan-xiong/buck,raviagarwal7/buck,vschs007/buck,dsyang/buck,daedric/buck,sdwilsh/buck,raviagarwal7/buck,dsyang/buck,k21/buck,romanoid/buck,rmaz/buck,shs96c/buck,zpao/buck,Addepar/buck,romanoid/buck,JoelMarcey/buck,davido/buck,ilya-klyuchnikov/buck,grumpyjames/buck,davido/buck,marcinkwiatkowski/buck,clonetwin26/buck,SeleniumHQ/buck,grumpyjames/buck,OkBuilds/buck,Addepar/buck,justinmuller/buck,marcinkwiatkowski/buck,darkforestzero/buck,shybovycha/buck,vschs007/buck,rmaz/buck,vschs007/buck,grumpyjames/buck,JoelMarcey/buck,facebook/buck,rmaz/buck,LegNeato/buck,k21/buck,illicitonion/buck,rmaz/buck,rmaz/buck,OkBuilds/buck,daedric/buck,shs96c/buck,raviagarwal7/buck,darkforestzero/buck,daedric/buck,OkBuilds/buck,davido/buck,dsyang/buck,raviagarwal7/buck,robbertvanginkel/buck,romanoid/buck,darkforestzero/buck,OkBuilds/buck,brettwooldridge/buck,marcinkwiatkowski/buck,illicitonion/buck,justinmuller/buck,k21/buck,facebook/buck,JoelMarcey/buck,robbertvanginkel/buck,zhan-xiong/buck,illicitonion/buck,k21/buck,k21/buck,dsyang/buck,kageiit/buck,zhan-xiong/buck,k21/buck,LegNeato/buck,raviagarwal7/buck,sdwilsh/buck,illicitonion/buck,davido/buck,justinmuller/buck,facebook/buck,marcinkwiatkowski/buck,facebook/buck,clonetwin26/buck,romanoid/buck,justinmuller/buck,OkBuilds/buck,shs96c/buck,raviagarwal7/buck,raviagarwal7/buck,vschs007/buck,clonetwin26/buck,Addepar/buck,davido/buck,robbertvanginkel/buck,illicitonion/buck,brettwooldridge/buck,Addepar/buck,daedric/buck,romanoid/buck,OkBuilds/buck,brettwooldridge/buck,davido/buck,justinmuller/buck,illicitonion/buck,shs96c/buck,raviagarwal7/buck,vschs007/buck,darkforestzero/buck,davido/buck,zpao/buck,Addepar/buck,ilya-klyuchnikov/buck,darkforestzero/buck,darkforestzero/buck,JoelMarcey/buck,kageiit/buck,zhan-xiong/buck,shybovycha/buck,daedric/buck,Addepar/buck,brettwooldridge/buck,ilya-klyuchnikov/buck,LegNeato/buck,LegNeato/buck,zhan-xiong/buck,ilya-klyuchnikov/buck,kageiit/buck,JoelMarcey/buck,darkforestzero/buck,daedric/buck,SeleniumHQ/buck,SeleniumHQ/buck,shybovycha/buck,dsyang/buck,robbertvanginkel/buck,OkBuilds/buck,marcinkwiatkowski/buck,brettwooldridge/buck,shs96c/buck,zpao/buck,romanoid/buck,shs96c/buck,darkforestzero/buck,shybovycha/buck,brettwooldridge/buck,romanoid/buck,LegNeato/buck,brettwooldridge/buck,kageiit/buck,vschs007/buck,SeleniumHQ/buck,zpao/buck,davido/buck,zhan-xiong/buck,vschs007/buck,ilya-klyuchnikov/buck,grumpyjames/buck,rmaz/buck,facebook/buck,OkBuilds/buck,illicitonion/buck,ilya-klyuchnikov/buck,dsyang/buck,SeleniumHQ/buck,brettwooldridge/buck,OkBuilds/buck,marcinkwiatkowski/buck,illicitonion/buck,justinmuller/buck,marcinkwiatkowski/buck,davido/buck,brettwooldridge/buck,robbertvanginkel/buck,k21/buck,nguyentruongtho/buck,JoelMarcey/buck,JoelMarcey/buck,rmaz/buck,vschs007/buck,OkBuilds/buck,shybovycha/buck,SeleniumHQ/buck,justinmuller/buck,k21/buck,ilya-klyuchnikov/buck,nguyentruongtho/buck,clonetwin26/buck,OkBuilds/buck,LegNeato/buck,robbertvanginkel/buck,OkBuilds/buck,dsyang/buck,grumpyjames/buck,k21/buck,sdwilsh/buck,SeleniumHQ/buck,nguyentruongtho/buck,clonetwin26/buck,rmaz/buck,nguyentruongtho/buck,robbertvanginkel/buck,shs96c/buck,clonetwin26/buck,justinmuller/buck,LegNeato/buck,LegNeato/buck,marcinkwiatkowski/buck,romanoid/buck,shybovycha/buck,Addepar/buck,darkforestzero/buck,clonetwin26/buck,dsyang/buck,shs96c/buck,zhan-xiong/buck,dsyang/buck,vschs007/buck,marcinkwiatkowski/buck,dsyang/buck,JoelMarcey/buck,SeleniumHQ/buck,clonetwin26/buck,raviagarwal7/buck,shybovycha/buck,raviagarwal7/buck,ilya-klyuchnikov/buck,daedric/buck,brettwooldridge/buck,SeleniumHQ/buck,rmaz/buck,grumpyjames/buck,LegNeato/buck,sdwilsh/buck,kageiit/buck,ilya-klyuchnikov/buck,vschs007/buck,daedric/buck,shs96c/buck,illicitonion/buck,ilya-klyuchnikov/buck,davido/buck,rmaz/buck,grumpyjames/buck,daedric/buck,illicitonion/buck,grumpyjames/buck,LegNeato/buck,marcinkwiatkowski/buck,nguyentruongtho/buck,grumpyjames/buck