bootstrap_guest.sh: turn DNS servers string into an array
bootstrap_guest.sh: turn DNS servers string into an array

rodionovd/cuckoo-osx-analyzer,rodionovd/cuckoo-osx-analyzer,cuckoobox/cuckoo,cuckoobox/cuckoo,cuckoobox/cuckoo,rodionovd/cuckoo-osx-analyzer,cuckoobox/cuckoo,cuckoobox/cuckoo