On Travis, run `buck test --all` before `ant test`.
On Travis, run `buck test --all` before `ant test`.

Summary:
As noted in `.travis.yml`, we want to run `buck test --all` first
because its test output lists which tests failed whereas Ant's does not.
As a result, the Buck way makes it easier to debug tests.

Test Plan:
Verify that we see test failures from Buck's testrunner rather than Ant's.

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