04d7932eb3
These use the full InMemoryModule stack because depending on users, groups, label types, and permissions is heavyweight. The careful reader will notice based on the tested behavior that there are still some outstanding bugs in label normalization during submit time. For example, since Submit only upserts the normalized list of approvals, any labels omitted by the normalizer due to an empty permission range are left entirely untouched. Such bugs are not fixed by this change, which is only to add tests. Change-Id: I955ee8c63b17812684f8350113cb0f2f1bf72fe6