Removed erroneous close of reader in the attach input handler.
Removed erroneous close of reader in the attach input handler.

The pipe reader that was being used to stream requests should
not be closed. Otherwise, the switchboard would not receive
the request fully.

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