Instead of invoking get_algorithms.py script repeatedly (which may yield
different results), move the algorithm configuration to an isctest
module. This ensures the variables are consistent across the entire test
run.
The openssl config needs to be parsed for some tests that use SoftHSM2.
Rewrite the parsing to python and ensure the required variables are
properly set test-wide.
While this isn't required for pytest operation and execution of the
system test suite, it can be handy to allow test script development and
debugging. Especially setup scripts often source conf.sh and expect
environment variables to be loaded. If these scripts are executed
stand-alone, the environment variables need to be loaded from the python
package.
Remove conf.sh.in and move the environment variables into isctest/vars
python package. This enabled the removal of an ugly pytest hack which
loaded and parsed these variables from the environment.
