Suppress DETAIL output from a foreign_data test.

Suppress DETAIL output from a foreign_data test.

Unstable sort order related to changes to nbtree from commit dd299df8
can cause two lines of DETAIL output to be in opposite-of-expected
order.  Suppress the output using the same VERBOSITY hack that is used
elsewhere in the foreign_data tests.

Note that the same foreign_data.out DETAIL output was mechanically
updated by commit dd299df8.  Only a few such changes were required,
though.

Per buildfarm member batfish.

Discussion: https://postgr.es/m/CAH2-WzkCQ_MtKeOpzozj7QhhgP1unXsK8o9DMAFvDqQFEPpkYQ@mail.gmail.com