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**Related issue:** Resolves#36684
Fix issue where sometimes backend doesn't send all certs to Android app.
Specifically, if a cert was previously sent (but was not installed by
Android), we will not resend it if a new one came in. This is fixed. Now
we always send all type=install certs.
# Checklist for submitter
## Testing
- [x] Added/updated automated tests
- [x] QA'd all new/changed functionality manually
Victor Lyuboslavsky
077b4442d7