Metacat

1. Set knb to version 2.
2. Centralize the lter tests into one class.

The getPackage method should throw an exception since the id is a data object.

Add a junit test.

'Change the verion of the production CN from the v1 to the v2.

Add two new test methods to test systemMetadataPIDExists and systemMetadataSIDExists.

merge from 2.0 branch: use updated node list information from cn-dev so that test will match current state of env. https://redmine.dataone.org/issues/7534

merge from 2.0 branch: initialize mock cn for test to run successfully.

Rearrange some test cases.

Add a new test to test the checksum matching for mn.update.

In the hasReservation method, it doesn't throw the IdentifierNotUnqiue exception.