Integration test version pinning.
Now that https://xgitlab.cels.anl.gov/argo/argotest/issues/3 is resolved, we can properly pin the integration tests with a hash and have cleaner build directories for the integration tests.
Now that https://xgitlab.cels.anl.gov/argo/argotest/issues/3 is resolved, we can properly pin the integration tests with a hash and have cleaner build directories for the integration tests.