Add a "be-test" target to CMake
Add a "be-test" target to CMake

This patch adds a "be-test" target to our CMake definitions that can be
used to build only the test binaries.

Change-Id: I94231fcc68ae237532a75ba3d5eba4604dda9cf9
Reviewed-on: http://gerrit.cloudera.org:8080/625
Reviewed-by: Henry Robinson <3eca10f30041813f045165784e24b5a950a6cc7e@cloudera.com>
Tested-by: Internal Jenkins

theyaa/Impala,cchanning/Impala,brightchen/Impala,cgvarela/Impala,cchanning/Impala,cgvarela/Impala,XiaominZhang/Impala,rdblue/Impala,caseyching/Impala,tempbottle/Impala,lnliuxing/Impala,caseyching/Impala,tempbottle/Impala,bratatidas9/Impala-1,brightchen/Impala,lnliuxing/Impala,cgvarela/Impala,tempbottle/Impala,kapilrastogi/Impala,bratatidas9/Impala-1,bowlofstew/Impala,lirui-intel/Impala,kapilrastogi/Impala,bowlofstew/Impala,bratatidas9/Impala-1,bowlofstew/Impala,XiaominZhang/Impala,bowlofstew/Impala,lnliuxing/Impala,lirui-intel/Impala,theyaa/Impala,caseyching/Impala,bowlofstew/Impala,tempbottle/Impala,theyaa/Impala,cgvarela/Impala,brightchen/Impala,bratatidas9/Impala-1,XiaominZhang/Impala,XiaominZhang/Impala,bratatidas9/Impala-1,theyaa/Impala,kapilrastogi/Impala,kapilrastogi/Impala,rdblue/Impala,rdblue/Impala,cchanning/Impala,lirui-intel/Impala,cgvarela/Impala,brightchen/Impala,rdblue/Impala,tempbottle/Impala,bowlofstew/Impala,XiaominZhang/Impala,cchanning/Impala,lnliuxing/Impala,cchanning/Impala,cchanning/Impala,rdblue/Impala,caseyching/Impala,bratatidas9/Impala-1,tempbottle/Impala,theyaa/Impala,lirui-intel/Impala,lnliuxing/Impala,kapilrastogi/Impala,XiaominZhang/Impala,lirui-intel/Impala,lnliuxing/Impala,XiaominZhang/Impala,caseyching/Impala,brightchen/Impala,caseyching/Impala,brightchen/Impala,cchanning/Impala,bratatidas9/Impala-1,lnliuxing/Impala,brightchen/Impala,rdblue/Impala,bowlofstew/Impala,theyaa/Impala,kapilrastogi/Impala,cgvarela/Impala,caseyching/Impala,theyaa/Impala,rdblue/Impala,tempbottle/Impala,lirui-intel/Impala,cgvarela/Impala,kapilrastogi/Impala,lirui-intel/Impala