Fix git clean -xdf skipping leveldb, removes internal .git dirs from leveldb tarball via 'git archive --format=tar.gz --prefix=leveldb/ origin/master > leveldb.tar.gz'
Fix git clean -xdf skipping leveldb, removes internal .git dirs
from leveldb tarball via 'git archive --format=tar.gz
--prefix=leveldb/ origin/master > leveldb.tar.gz'

MESOS-1764

Review: https://reviews.apache.org/r/25508

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