Fixed a bug in the MesosContainerizer creation logic.
Fixed a bug in the MesosContainerizer creation logic.

Review: https://reviews.apache.org/r/37194

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