Metacat

Change the format id to be "application/bagit" in the getPackage method.

Increased the serial version number before updating the system metadata.

Fixed a bug to increase the serial version

Increased the serial version during the test.

Increase serial version during the test of updateSystemMetadata method.

Restore the commented out tests.

Add more test to test the code to create branch obsolete chain.

Add a test method to test the update of the obsoletes and obsoletedBy fields.

Add the code to test a MN to call setReplicationStatus successfully.

Add the code to test that non-cn session can't call some methods like registerSystemMetadata, updateSystemMetadata and et al.