tools: simplify the bug reproduction on GCE

[tarasmadan]

Is your feature request related to a problem? Please describe.
Not every reproducer works on QEMU.
Our customers need some guide or tool on how to reproduce bugs on GCE machines.

Describe the solution you'd like
Some tool that spawns GCE machine, run reproducer, collect the whole kernel log, kill machine.
The alternative is to spawn the GCE machine using syzbot exported artefacts and allows you to ssh.

The tool that can convert reproducer into the full kernel config (from the system boot to machine shutdown) will also help to collect consequent crashes (disable panic_on_warn).

[tarasmadan]

CC @FlorentRevest

[dvyukov]

In what context reproducing a bug w/o a patch is useful? It does not give any additional information on top what we already have/know.
We have reproduction with a patch (and patch can be empty if needed).

[a-nogikh]

Some tool that spawns GCE machine, run reproducer, collect the whole kernel log, kill machine.

is it not tools/syz-crush?