Originally the intent was to make the test more robust against changing
test keys. It turns out that (unscientifically) gpg --with-colons output
changes more often than our test key. Rather than making the script more
complex, just hard code the fingerprint.
This fixes Debian bug #847013; I expect similar test failures as other
distros adopt gnupg 2.1.15
The files (test) scripts source (with builtin command `.`) provides
information which the scripts depend, and without the `source` to
succeed allowing script to continue may lead to dangerous situations
(e.g. rm -rf "${undefined_variable}"/*).
At the end of all source (.) lines construct ' || exit 1' was added;
In our case the script script will exit if it cannot find (or read) the
file to be sourced. Additionally script would also exits if the last
command of the sourced file exited nonzero.
All test scripts to be executed are now named as T\d\d\d-name.sh,
numers in increments of 10.
This eases adding new tests and developers to see which are test scripts
that are executed by test suite and in which order.
