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
Merging in multiple steps to avoid getting new tests with non-correct
plumbing.
- some more dynamic file names
- convert more commands to pure bash functions
- cleanup no longer neede files
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.
- vg-test caught a minor issue in impstats (fixed)
- placeholder created for other dynstats tests
- a new assertion in diag.sh which allows extracting a particular column and expecting sum-up to match given value
- imdiag supports injecting litteral messages now (test can send a fully formed syslog message through imdiag, its a backward compatible change in protocol, allows for richer things to be build while being fully backward compatible)