This change renames directories in preparation for the great package
rename. The repository is now in a broken state because the code
itself hasn't been updated. However this should ensure that git
correctly preserves history for each file.
* DnsUpdateWriter publishes changes to NS, DS, A, AAAA records
for domains/hosts as appropriate using RFC 2136 DNS UPDATE protocol
* Static configuration separate from RegistryConfig
* Include dnsjava library as new third party dependency
to generate DNS protocol messages
* Expose /_dr/task/writeDns in RegistryTestServer
* Currently not included in BackendComponent