- QUIT is not an important FTP command
- curl only sends it "best effort", meaning it might not be sent
- it is a known "flaky" thing in test output because of this
Closes#14404
Instead of providing a fixed single synthetic response in the test
server itself. To allow us to better use *different* directory listings
in different test cases. In this change, most listings remain the same
as before.
The wildcard match tests still use synthetic responses but we should fix
that as well.
Updated numerous test cases to use this.
Closes#14295
