Updated post-reviews.py to auto set 'depends on' field.
Updated post-reviews.py to auto set 'depends on' field.

Review: https://reviews.apache.org/r/34503

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