tests: Don't set -e for compound tests managed by test_run

[evgenyz]

The test_run wrapper should handle all return codes, we don't want to bail out early.

Fixes: https://github.com/OpenSCAP/openscap/issues/2110

[evgenyz]

@jan-cerny In this draft I've only changed a handful of compound tests, but we probably should do that to all of them. What do you think?

[jan-cerny]

IIUC most of the test functions don't return any return value, they rely on that the set -e will cause that once any command in the function returns non-zero value the test will exit and fail. This is the case for all the grep, assert_exists and similar calls. So if you remove set -e the test will start passing permanently.