Fixed the compilation issue in port mapping tests.
Fixed the compilation issue in port mapping tests.

Review: https://reviews.apache.org/r/31308

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