Nordugrid LDAP queries can't handle obscuring of proxy DN
To comply with the EU data privacy law, the NorduGrid LDAP server no longer publishes the DNs of users' proxy certificates. Instead, they now publish the SHA512 hash of the DN in the same fields. This breaks our grid universe support for nordugrid. The gridmanager does an LDAP query based on the proxy DN to get job statuses.
We can update the query to search for either the original DN or the hashed value.
CODE REVIEW - looks good.