Cut 0.19.0 off of master.
Cut 0.19.0 off of master.

Review: https://reviews.apache.org/r/22028

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