backport regression test from GL #3157
add "blackhole { none; };" to a secondary server in the xfer system test to ensure that the error in GL #3157 (closed) is not present in 9.16.
Closes #3157 (closed)
add "blackhole { none; };" to a secondary server in the xfer system test to ensure that the error in GL #3157 (closed) is not present in 9.16.
Closes #3157 (closed)