Fuzz testing on the BlockServer

From [wikipedia](https://en.wikipedia.org/wiki/Fuzz_testing): fuzz testing or fuzzing is a software testing technique, often automated or semi-automated, that involves providing invalid, unexpected, or random data to the inputs of a computer program. The program is then monitored for exceptions such as crashes, or failing built-in code assertions or for finding potential memory leaks.

We could try this on the BlockServer in a couple of ways:
- Random or mutated config files
- Random or mutated XML or JSON send to the PVs