ThriftBuckConfig: cleanup duplicate code
ThriftBuckConfig: cleanup duplicate code

Summary: BuckConfig provides ##getRequiredBuildTarget##.

Test Plan: buck test --all

daedric/buck,justinmuller/buck,hgl888/buck,k21/buck,marcinkwiatkowski/buck,marcinkwiatkowski/buck,zhan-xiong/buck,rhencke/buck,nguyentruongtho/buck,daedric/buck,justinmuller/buck,clonetwin26/buck,rmaz/buck,dpursehouse/buck,JoelMarcey/buck,darkforestzero/buck,romanoid/buck,MarkRunWu/buck,Addepar/buck,Addepar/buck,tgummerer/buck,marcinkwiatkowski/buck,siddhartharay007/buck,janicduplessis/buck,kageiit/buck,darkforestzero/buck,LegNeato/buck,zhuxiaohao/buck,dpursehouse/buck,mikekap/buck,brettwooldridge/buck,Addepar/buck,facebook/buck,daedric/buck,Heart2009/buck,robbertvanginkel/buck,grumpyjames/buck,janicduplessis/buck,Learn-Android-app/buck,justinmuller/buck,vschs007/buck,k21/buck,stuhood/buck,JoelMarcey/buck,dsyang/buck,Addepar/buck,justinmuller/buck,LegNeato/buck,OkBuilds/buck,brettwooldridge/buck,rhencke/buck,tgummerer/buck,rhencke/buck,Heart2009/buck,k21/buck,LegNeato/buck,zhan-xiong/buck,raviagarwal7/buck,darkforestzero/buck,Learn-Android-app/buck,janicduplessis/buck,lukw00/buck,bocon13/buck,daedric/buck,zhan-xiong/buck,artiya4u/buck,robbertvanginkel/buck,LegNeato/buck,zpao/buck,davido/buck,ilya-klyuchnikov/buck,Learn-Android-app/buck,mikekap/buck,pwz3n0/buck,dushmis/buck,grumpyjames/buck,zpao/buck,1yvT0s/buck,sdwilsh/buck,rmaz/buck,neonichu/buck,shs96c/buck,JoelMarcey/buck,janicduplessis/buck,sdwilsh/buck,kageiit/buck,mnuessler/buck,lukw00/buck,1yvT0s/buck,OkBuilds/buck,clonetwin26/buck,darkforestzero/buck,SeleniumHQ/buck,rhencke/buck,mnuessler/buck,ilya-klyuchnikov/buck,Learn-Android-app/buck,tgummerer/buck,stuhood/buck,mnuessler/buck,rhencke/buck,Learn-Android-app/buck,raviagarwal7/buck,mikekap/buck,grumpyjames/buck,rmaz/buck,raviagarwal7/buck,clonetwin26/buck,liuyang-li/buck,sdwilsh/buck,nguyentruongtho/buck,vine/buck,siddhartharay007/buck,shybovycha/buck,SeleniumHQ/buck,janicduplessis/buck,MarkRunWu/buck,Dominator008/buck,mnuessler/buck,marcinkwiatkowski/buck,artiya4u/buck,artiya4u/buck,janicduplessis/buck,sdwilsh/buck,zhan-xiong/buck,LegNeato/buck,clonetwin26/buck,Learn-Android-app/buck,brettwooldridge/buck,nguyentruongtho/buck,ilya-klyuchnikov/buck,tgummerer/buck,rowillia/buck,SeleniumHQ/buck,grumpyjames/buck,Dominator008/buck,zhan-xiong/buck,illicitonion/buck,vine/buck,Learn-Android-app/buck,pwz3n0/buck,justinmuller/buck,MarkRunWu/buck,dushmis/buck,liuyang-li/buck,liuyang-li/buck,tgummerer/buck,clonetwin26/buck,dpursehouse/buck,ilya-klyuchnikov/buck,1yvT0s/buck,sdwilsh/buck,vschs007/buck,mikekap/buck,Dominator008/buck,mikekap/buck,davido/buck,dushmis/buck,k21/buck,mikekap/buck,lukw00/buck,bocon13/buck,artiya4u/buck,tgummerer/buck,Dominator008/buck,Dominator008/buck,bocon13/buck,SeleniumHQ/buck,daedric/buck,neonichu/buck,vine/buck,rmaz/buck,marcinkwiatkowski/buck,luiseduardohdbackup/buck,Learn-Android-app/buck,siddhartharay007/buck,romanoid/buck,OkBuilds/buck,OkBuilds/buck,zhan-xiong/buck,SeleniumHQ/buck,lukw00/buck,Heart2009/buck,ilya-klyuchnikov/buck,1yvT0s/buck,illicitonion/buck,OkBuilds/buck,brettwooldridge/buck,rowillia/buck,justinmuller/buck,sdwilsh/buck,pwz3n0/buck,MarkRunWu/buck,dpursehouse/buck,kageiit/buck,justinmuller/buck,zhan-xiong/buck,siddhartharay007/buck,davido/buck,davido/buck,zhuxiaohao/buck,kageiit/buck,hgl888/buck,darkforestzero/buck,rmaz/buck,Dominator008/buck,mogers/buck,pwz3n0/buck,darkforestzero/buck,dushmis/buck,artiya4u/buck,JoelMarcey/buck,sdwilsh/buck,dsyang/buck,hgl888/buck,romanoid/buck,rowillia/buck,Addepar/buck,k21/buck,shs96c/buck,ilya-klyuchnikov/buck,SeleniumHQ/buck,shs96c/buck,davido/buck,shybovycha/buck,rowillia/buck,romanoid/buck,zhan-xiong/buck,SeleniumHQ/buck,zhan-xiong/buck,raviagarwal7/buck,dsyang/buck,justinmuller/buck,robbertvanginkel/buck,Heart2009/buck,Distrotech/buck,rhencke/buck,dsyang/buck,rowillia/buck,mikekap/buck,janicduplessis/buck,lukw00/buck,dushmis/buck,shybovycha/buck,stuhood/buck,brettwooldridge/buck,facebook/buck,shs96c/buck,robbertvanginkel/buck,ilya-klyuchnikov/buck,rhencke/buck,facebook/buck,Addepar/buck,hgl888/buck,vine/buck,daedric/buck,Learn-Android-app/buck,ilya-klyuchnikov/buck,vschs007/buck,marcinkwiatkowski/buck,JoelMarcey/buck,brettwooldridge/buck,bocon13/buck,illicitonion/buck,zhuxiaohao/buck,raviagarwal7/buck,daedric/buck,luiseduardohdbackup/buck,illicitonion/buck,janicduplessis/buck,tgummerer/buck,hgl888/buck,shybovycha/buck,rowillia/buck,1yvT0s/buck,siddhartharay007/buck,tgummerer/buck,shybovycha/buck,LegNeato/buck,siddhartharay007/buck,rhencke/buck,shybovycha/buck,Addepar/buck,dsyang/buck,mogers/buck,rmaz/buck,davido/buck,justinmuller/buck,OkBuilds/buck,Distrotech/buck,vine/buck,rowillia/buck,OkBuilds/buck,siddhartharay007/buck,lukw00/buck,Addepar/buck,robbertvanginkel/buck,Distrotech/buck,illicitonion/buck,artiya4u/buck,k21/buck,Distrotech/buck,dsyang/buck,daedric/buck,dushmis/buck,rowillia/buck,robbertvanginkel/buck,brettwooldridge/buck,grumpyjames/buck,daedric/buck,stuhood/buck,dsyang/buck,marcinkwiatkowski/buck,mikekap/buck,rhencke/buck,darkforestzero/buck,liuyang-li/buck,romanoid/buck,raviagarwal7/buck,janicduplessis/buck,vschs007/buck,artiya4u/buck,Learn-Android-app/buck,pwz3n0/buck,romanoid/buck,shs96c/buck,vschs007/buck,clonetwin26/buck,grumpyjames/buck,ilya-klyuchnikov/buck,LegNeato/buck,artiya4u/buck,mnuessler/buck,zhuxiaohao/buck,sdwilsh/buck,mnuessler/buck,mogers/buck,stuhood/buck,stuhood/buck,bocon13/buck,liuyang-li/buck,Distrotech/buck,rmaz/buck,bocon13/buck,sdwilsh/buck,robbertvanginkel/buck,luiseduardohdbackup/buck,zpao/buck,illicitonion/buck,mnuessler/buck,bocon13/buck,mogers/buck,Addepar/buck,mogers/buck,lukw00/buck,Dominator008/buck,justinmuller/buck,rowillia/buck,lukw00/buck,Heart2009/buck,OkBuilds/buck,hgl888/buck,luiseduardohdbackup/buck,grumpyjames/buck,liuyang-li/buck,shs96c/buck,daedric/buck,darkforestzero/buck,zpao/buck,shybovycha/buck,dpursehouse/buck,facebook/buck,zhan-xiong/buck,liuyang-li/buck,brettwooldridge/buck,vine/buck,vschs007/buck,dushmis/buck,brettwooldridge/buck,1yvT0s/buck,bocon13/buck,daedric/buck,vschs007/buck,facebook/buck,illicitonion/buck,LegNeato/buck,vine/buck,grumpyjames/buck,romanoid/buck,mikekap/buck,liuyang-li/buck,tgummerer/buck,JoelMarcey/buck,neonichu/buck,neonichu/buck,SeleniumHQ/buck,OkBuilds/buck,zhuxiaohao/buck,daedric/buck,sdwilsh/buck,Dominator008/buck,k21/buck,kageiit/buck,LegNeato/buck,JoelMarcey/buck,janicduplessis/buck,romanoid/buck,zpao/buck,romanoid/buck,1yvT0s/buck,rowillia/buck,nguyentruongtho/buck,MarkRunWu/buck,illicitonion/buck,facebook/buck,Dominator008/buck,SeleniumHQ/buck,liuyang-li/buck,artiya4u/buck,dsyang/buck,OkBuilds/buck,clonetwin26/buck,janicduplessis/buck,davido/buck,vschs007/buck,tgummerer/buck,k21/buck,raviagarwal7/buck,clonetwin26/buck,vine/buck,illicitonion/buck,rmaz/buck,rmaz/buck,vschs007/buck,zhan-xiong/buck,davido/buck,robbertvanginkel/buck,stuhood/buck,illicitonion/buck,shs96c/buck,neonichu/buck,marcinkwiatkowski/buck,shs96c/buck,Dominator008/buck,raviagarwal7/buck,pwz3n0/buck,raviagarwal7/buck,rowillia/buck,ilya-klyuchnikov/buck,stuhood/buck,dpursehouse/buck,pwz3n0/buck,dsyang/buck,sdwilsh/buck,shybovycha/buck,mogers/buck,mikekap/buck,JoelMarcey/buck,darkforestzero/buck,robbertvanginkel/buck,Distrotech/buck,grumpyjames/buck,zpao/buck,stuhood/buck,ilya-klyuchnikov/buck,davido/buck,darkforestzero/buck,shs96c/buck,brettwooldridge/buck,hgl888/buck,luiseduardohdbackup/buck,mogers/buck,dushmis/buck,luiseduardohdbackup/buck,romanoid/buck,Dominator008/buck,vschs007/buck,Heart2009/buck,hgl888/buck,OkBuilds/buck,illicitonion/buck,artiya4u/buck,romanoid/buck,neonichu/buck,grumpyjames/buck,ilya-klyuchnikov/buck,davido/buck,facebook/buck,mogers/buck,bocon13/buck,vine/buck,shybovycha/buck,dsyang/buck,zhuxiaohao/buck,davido/buck,clonetwin26/buck,shs96c/buck,shybovycha/buck,LegNeato/buck,MarkRunWu/buck,luiseduardohdbackup/buck,marcinkwiatkowski/buck,Heart2009/buck,neonichu/buck,MarkRunWu/buck,rhencke/buck,Dominator008/buck,justinmuller/buck,SeleniumHQ/buck,dsyang/buck,marcinkwiatkowski/buck,zpao/buck,Addepar/buck,illicitonion/buck,tgummerer/buck,raviagarwal7/buck,shs96c/buck,mogers/buck,dpursehouse/buck,justinmuller/buck,rmaz/buck,zhuxiaohao/buck,Addepar/buck,clonetwin26/buck,zhan-xiong/buck,robbertvanginkel/buck,mikekap/buck,marcinkwiatkowski/buck,grumpyjames/buck,rmaz/buck,JoelMarcey/buck,JoelMarcey/buck,SeleniumHQ/buck,lukw00/buck,mnuessler/buck,marcinkwiatkowski/buck,Distrotech/buck,OkBuilds/buck,luiseduardohdbackup/buck,bocon13/buck,liuyang-li/buck,LegNeato/buck,darkforestzero/buck,vschs007/buck,rowillia/buck,siddhartharay007/buck,1yvT0s/buck,robbertvanginkel/buck,lukw00/buck,Distrotech/buck,stuhood/buck,clonetwin26/buck,artiya4u/buck,clonetwin26/buck,nguyentruongtho/buck,ilya-klyuchnikov/buck,neonichu/buck,grumpyjames/buck,robbertvanginkel/buck,k21/buck,lukw00/buck,LegNeato/buck,Learn-Android-app/buck,neonichu/buck,clonetwin26/buck,hgl888/buck,raviagarwal7/buck,k21/buck,zhuxiaohao/buck,rmaz/buck,luiseduardohdbackup/buck,sdwilsh/buck,kageiit/buck,bocon13/buck,pwz3n0/buck,illicitonion/buck,sdwilsh/buck,bocon13/buck,vine/buck,davido/buck,kageiit/buck,vine/buck,SeleniumHQ/buck,brettwooldridge/buck,dushmis/buck,JoelMarcey/buck,shybovycha/buck,k21/buck,davido/buck,Addepar/buck,rhencke/buck,robbertvanginkel/buck,shs96c/buck,zhan-xiong/buck,brettwooldridge/buck,romanoid/buck,nguyentruongtho/buck,MarkRunWu/buck,vschs007/buck,darkforestzero/buck,Distrotech/buck,LegNeato/buck,Heart2009/buck,k21/buck,JoelMarcey/buck,stuhood/buck,raviagarwal7/buck,mogers/buck,1yvT0s/buck,vschs007/buck,dsyang/buck,dpursehouse/buck,dushmis/buck,mogers/buck,justinmuller/buck,liuyang-li/buck,shs96c/buck,mnuessler/buck,SeleniumHQ/buck,dsyang/buck,nguyentruongtho/buck,shybovycha/buck,k21/buck,Distrotech/buck,JoelMarcey/buck,daedric/buck,darkforestzero/buck,Heart2009/buck,Addepar/buck,pwz3n0/buck,rmaz/buck,pwz3n0/buck,janicduplessis/buck,pwz3n0/buck,marcinkwiatkowski/buck,siddhartharay007/buck,zhuxiaohao/buck,brettwooldridge/buck,Distrotech/buck,OkBuilds/buck,mikekap/buck,raviagarwal7/buck,romanoid/buck,shybovycha/buck