correctly. Due to the limited number of connections accepted, it's not
recommended to use this testenv for anything else.
-schemaupgrade_dc
+schema_dc
----------------
-This is a 2-DC testenv setup (schemaupgrade_dc and schemaupgrade_pair_dc).
+This is a 2-DC testenv setup (schema_dc and schema_pair_dc).
We provision the first DC, and join the second, using an older version of the
schema (2008R2), then start-up Samba. Then, we run a schema upgrade (i.e.
'samba-tool domain schemaupgrade') on the PDC.