Fixed docker fetcher plugin process indentation.
Fixed docker fetcher plugin process indentation.

Review: https://reviews.apache.org/r/48570/

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