ClusterFuzz: Add a --no_retry option for local debugging #7187
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When we run ClusterFuzz's
run.pylocally, we need to investigate anyerrors in creating fuzz testcases (as those are real bugs in
wasm-opt).Previously we just checked for a "retry" message in the output of
run.py(as the script retries automatically - we don't want a
wasm-optbug tostop ClusterFuzz), but that makes it impossible to debug the problem,
since the retry tramples the data. The new option, used only locally,
stops at the error so it can be investigated.