#23760
Manual QA done:
1. Get the current APNS key using tools/mdm/assets tool.
2. Convert it to a PKCS8 key like: `openssl pkcs8 -topk8 -inform PEM
-outform PEM -in mdm_assets/apns_key.key -out mdm_assets/apns_pkcs8.key
-nocrypt`
3. Delete all `apns` and `scep` rows from `mdm_config_assets` DB table.
4. Point to the PKCS8 key like:
```
export FLEET_MDM_APPLE_APNS_KEY=/Users/victor/work/fleet/mdm_assets/apns_pkcs8.key
export FLEET_MDM_APPLE_APNS_CERT=/Users/victor/work/fleet/mdm_assets/apns_cert.crt
export FLEET_MDM_APPLE_SCEP_CERT=/Users/victor/work/fleet/mdm_assets/ca_cert.crt
export FLEET_MDM_APPLE_SCEP_KEY=/Users/victor/work/fleet/mdm_assets/ca_key.key
export FLEET_MDM_APPLE_SCEP_CHALLENGE=$(cat /Users/victor/work/fleet/mdm_assets/scep_challenge)
```
This step may be tricky. Might be simpler to spin up a fresh Fleet
server with the SCEP/APNS values.
5. Start fleet server. Make sure APNS works by pushing/deleting a
profile.
6. Renew APNS cert and make sure the new cert still works.
# Checklist for submitter
If some of the following don't apply, delete the relevant line.
<!-- Note that API documentation changes are now addressed by the
product design team. -->
- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
- [x] Added/updated tests
- [x] Manual QA for all new/changed functionality
Victor Lyuboslavsky
25d9a2b043