Verify that host name or alias for newly created tenant aren't taken yet by deleted tenants
Fix test failing after fixing duplicate host issue
Merge branch 'master' of https://github.com/sakaiproject/Hilary into tenantDelete
Add test that verifies that creating a new tenant with hostname or alias that matches that of one of the deleted tenants fails.
Follow up on review
Merge branch 'master' of https://github.com/sakaiproject/Hilary into tenantDelete
Use random alias and host in tenant tests
Renamed aarRestContext to a generic restContext oae-tenants/tests.