nixos/tests/pgjwt: fix test (#341150)

  testScript = { nodes, ... }:

  let

    sqlSU = "${nodes.master.config.services.postgresql.superUser}";

    sqlSU = "${nodes.master.services.postgresql.superUser}";

    pgProve = "${pkgs.perlPackages.TAPParserSourceHandlerpgTAP}";

  in

  ''

    start_all()

    master.wait_for_unit("postgresql")

    master.succeed(

        "${pkgs.gnused}/bin/sed -e '12 i CREATE EXTENSION pgcrypto;\\nCREATE EXTENSION pgtap;\\nSET search_path TO tap,public;' ${pgjwt.src}/test.sql > /tmp/test.sql"

        "${pkgs.gnused}/bin/sed -e '12 i SET search_path TO tap,public;' ${pgjwt.src}/test.sql > /tmp/test.sql"

    )

    master.succeed(

        "${pkgs.sudo}/bin/sudo -u ${sqlSU} PGOPTIONS=--search_path=tap,public ${pgProve}/bin/pg_prove -d postgres -v -f /tmp/test.sql"