Metacat

Merging the METACAT_2_0_6_BRANCH changes for [M|C]NodeService into the trunk.

allow verification date to be updated for replicas (patch from Skye). https://redmine.dataone.org/issues/3699

select only distinct guids (synch may have failed more than once for any given guid)
https://redmine.dataone.org/issues/3539

include xml_revisions.
do not allow removal of server_location = 1 documents (these are not replicas).
https://redmine.dataone.org/issues/3539

include size and format datcite elements (optional) and use more general resourceType without formatId in them (Dataset/metadata and Dataset/data). http://schema.datacite.org/meta/kernel-2.2/doc/DataCite-MetadataKernel_v2.2.pdf

lookup the title for EML files when registering DOIs.
lookup the creator from DataONE CN (if available).
add EML-based test. http://bugzilla.ecoinformatics.org/show_bug.cgi?id=5513

Set the session to null so that the call uses the CN certificate when calling MN.systemMetadataChanged();

To keep all nodes up to date with regard to system metadata changes, add the broadcastSystemMetadataChange() method that finds replica MNs in the node list and calls systemMetadataChanged(). Modify setReplicationStatus() and updateReplicationMetadata() to fire this off when a replica status changes to completed. We may decide to inform MNs at other times too, but this is a conservative amount of calls going to the MNs for now.

refactor DOI registration into separate class. http://bugzilla.ecoinformatics.org/show_bug.cgi?id=5513

refactor using ezid-client changes that split field names and values into separate enums. http://bugzilla.ecoinformatics.org/show_bug.cgi?id=5513