Add --skip-build option
Add --skip-build option

Summary: Allow engineers to override the build of all targets associated with a project so they can build individual targets as they wish.

Test Plan:
- Local testing
- Sandcastle.

Reviewed By: marcinkosiba

fbshipit-source-id: 8ab0813

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