Updated the executor driver to set TaskStatus.uuid.
Updated the executor driver to set TaskStatus.uuid.

Review: https://reviews.apache.org/r/35910

craimbert/mesos,kaysoky/mesos,andschwa/mesos,Gilbert88/mesos,Aman-Jain-14/customizedMesos,kaysoky/mesos,Gilbert88/mesos,jpeach/mesos,verizonlabs/mesos,dforsyth/mesos,neilconway/mesos,gsantovena/mesos,yuquanshan/customizedMesos,dforsyth/mesos,asamerh4/mesos,reneploetz/mesos,yuquanshan/customizedMesos,chhsia0/mesos,kaysoky/mesos,verizonlabs/mesos,dforsyth/mesos,Gilbert88/mesos,yuquanshan/customizedMesos,jpeach/mesos,andschwa/mesos,neilconway/mesos,Gilbert88/mesos,gsantovena/mesos,gsantovena/mesos,verizonlabs/mesos,gsantovena/mesos,Aman-Jain-14/customizedMesos,verizonlabs/mesos,zmalik/mesos,andschwa/mesos,abudnik/mesos,asamerh4/mesos,yuquanshan/customizedMesos,Aman-Jain-14/customizedMesos,jpeach/mesos,reneploetz/mesos,craimbert/mesos,chhsia0/mesos,zmalik/mesos,Aman-Jain-14/customizedMesos,craimbert/mesos,jpeach/mesos,chhsia0/mesos,neilconway/mesos,craimbert/mesos,neilconway/mesos,kaysoky/mesos,reneploetz/mesos,reneploetz/mesos,gsantovena/mesos,zmalik/mesos,craimbert/mesos,abudnik/mesos,zmalik/mesos,andschwa/mesos,andschwa/mesos,verizonlabs/mesos,chhsia0/mesos,reneploetz/mesos,jpeach/mesos,abudnik/mesos,asamerh4/mesos,verizonlabs/mesos,andschwa/mesos,chhsia0/mesos,chhsia0/mesos,kaysoky/mesos,yuquanshan/customizedMesos,neilconway/mesos,dforsyth/mesos,Gilbert88/mesos,Aman-Jain-14/customizedMesos,Aman-Jain-14/customizedMesos,yuquanshan/customizedMesos,reneploetz/mesos,dforsyth/mesos,asamerh4/mesos,verizonlabs/mesos,Gilbert88/mesos,andschwa/mesos,asamerh4/mesos,abudnik/mesos,zmalik/mesos,asamerh4/mesos,Aman-Jain-14/customizedMesos,craimbert/mesos,asamerh4/mesos,zmalik/mesos,reneploetz/mesos,kaysoky/mesos,kaysoky/mesos,dforsyth/mesos,yuquanshan/customizedMesos,jpeach/mesos,abudnik/mesos,jpeach/mesos,abudnik/mesos,zmalik/mesos,dforsyth/mesos,gsantovena/mesos,chhsia0/mesos,neilconway/mesos,neilconway/mesos,craimbert/mesos,gsantovena/mesos,abudnik/mesos,Gilbert88/mesos