Run qemu_systemmode tests with self-hosted runners

[rmalmain]

Also, rename test_all_fuzzers.sh into test_fuzzer.sh

[domenukk]

test_fuzzers.sh? It doesn't just test a single one?

[rmalmain]

Now it does since https://github.com/AFLplusplus/LibAFL/blob/1002783c9363d619e70692eb4d31eb08616acd70/scripts/test_all_fuzzers.sh no?

[tokatoka]

@domenukk
I changed the ci so that one CI instance will only test one fuzzer.
test_all_fuzzers.sh accept argv[1] which is the sole fuzzer to run for that specific CI instance. Hence it is test_fuzzer.sh

[domenukk]

Is there a way to run this locally still/bring back test_all_fuzzers.sh as wrapper?

[tokatoka]

@rmalmain
can you add this to line 9 of test_all_fuzzers.sh?

    fuzzers=$(find ./fuzzers -mindepth 1 -maxdepth 1 -type d)
    backtrace_fuzzers=$(find ./fuzzers/backtrace_baby_fuzzers -mindepth 1 -maxdepth 1 -type d)
    fuzzer_to_test="$fuzzers $backtrace_fuzzers"

with this you test everything if it is run on local