Updated http tests in libprocess for the new get/post interfaces.
Updated http tests in libprocess for the new get/post interfaces.

From: Jie Yu <0acc13d62cce94f85218ac2e2aa40486e36f9a9f@gmail.com>
Review: https://reviews.apache.org/r/17077

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