ditsing/ruaft @ cd5818f55816b7e88d262326a26818fee00c5369

Jing Yang cd5818f558 Add shutdown to snapshot holder and a new test.		%!s(int64=4) %!d(string=hai) anos
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src	cd5818f558 Add shutdown to snapshot holder and a new test.	%!s(int64=4) %!d(string=hai) anos
tests	a9b3251155 Add an option to lower the ops count limit.	%!s(int64=4) %!d(string=hai) anos
Cargo.toml	027859bd71 Move generic_test to testing_utils.	%!s(int64=4) %!d(string=hai) anos