Also now permit interactivly running tests without explicitly setting
$srcdir. This now works if we are inside ./tests and fails, as before,
when we are in a different directory.
Detected by shellcheck via CodeFactor.io
Support tools (like tcpflood) are also upgraded to support the
necessary dynamic port.s
This is part of the effort to make parallel testing possible.
We move parts of the cleanup to the buildbot cleanup, as we cannot
clean out instances on each test when we run parallel tests.
changes some of the test commands to use bash functions
includes some small bug fixes to tests where bugs were
previously not seen due to different plumbing.
commit 5cee06a60 introduced case-perservation, but did not make
it optional. This broke existing behavior and thus potentially
existing configurations. This commit introduces a new parameter
"sd_name.lowercase" which now controls this behavior.
Note that 5cee06a60 is merged to master branch together with this
commit, so no released code ever had the potential regression.
see also https://github.com/rsyslog/rsyslog/pull/2181
