fix bazel_integration_test runner to allow non-release URLs
fix bazel_integration_test runner to allow non-release URLs

was broken by cd5416e3b2702e7ff7d7564c2a9395344e9e724a in such a way that it was testing the prior release and not the local code from HEAD

bazelbuild/rules_python,bazelbuild/rules_python,bazelbuild/rules_python