Metacat

Check the obosoletedBy and Obsoletes only can be set once.

The method of setReplicationstatus can be called by CNs and MNs.

merge from V2 impl: check for optional "failure" param instead of throwing exception when it is missing (often is). https://redmine.dataone.org/issues/7283

check for optional "failure" param instead of throwing exception when it is missing (often is). https://redmine.dataone.org/issues/7283

Fixed a possible null pointer exception bug. https://redmine.dataone.org/issues/7280

Only CNs can call those methods:
CNCore.registerSystemMetadata()
CNCore,updateSystemMetadata()
CNReplication.setReplicationStatus()
CNReplication.updateReplicationMetadata()
CNReplication.deleteReplicationMetadata()

On mn.update and mn.updateSystemMetadata, those clients are allowed:
1. CNs.
2. Clients with appropriate permission calling the method on the authoritative nodes.

When compare the dateUploaded, now we use sysmetadata.getDateUploaded().getTime(). It used systemmetadata.getDateUploaded() (Date objects) to compare.

Add code to catch the BaseException in the updateSystemMetadata method.

Add the code to handle if the cn is null.