Re: psql: Add role's membership options to the \du+ command

>>> I would suggest tweaking the test output to include regress_du_admin ...

I found (with a help of cfbot) difficulty with this. The problem is the bootstrap superuser name (oid=10).
This name depends on the OS username. In my case it's pal, but in most cases it's postgres or something else.
And the output of \du regress_du_admin can't be predicted:

\du regress_du_admin
                             List of roles
     Role name     | Attributes  |              Member of
------------------+-------------+-------------------------------------
  regress_du_admin | Create role | regress_du_role0 from pal (a, i, s)+
                   |             | regress_du_role1 from pal (a, i, s)+
                   |             | regress_du_role2 from pal (a, i, s)


So, I decided not to include regress_du_admin in the test output.

Please, see version 5 attached. Only tests changed.

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Pavel Luzanov