Updated `NetClsCgroupsFilter` to use `NET_CLS_` to filter test cases.
Updated `NetClsCgroupsFilter` to use `NET_CLS_` to filter test cases.

Review: https://reviews.apache.org/r/51781/

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