Cleaned up container-related logs in docker containerizer.
Cleaned up container-related logs in docker containerizer.

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