QA Test Steps
1. Reply to new post before replication completes. See no error.
2. Login and clear cache before replication completes. Reload page.
3. First login of LDAP user gets all expected memberships (groups, teams, and channels).
4. LDAP sync adds the following memberships for q users where q > 1 (group, team, channel).
5. Clear all caches as system admin, reload the page and don't get logged out immediately.
6. General smoke testing of the app does not trigger too many unnecessary extra reads against master (as monitored by the logging).