[Ingest] Placeholder pattern error in Cloud

[jfsiii]

1. https://userconsole-a.qa.cld.elstc.co/deployments/create
2. Leave defaults (Kibana 7.8.0). Click Customize deployments
3. Click User Settings Overrides under the Kibana section and enter xpack.ingestManager.enabled: true
4. wait ...
5. open Kibana. Expand side nav. Click Ingest Manager link
6. wait ...
7. Get logs-index_pattern_placeholder could not be created

I tried with the default 7.8.0 and 7.8.0-SNAPSHOT builds and got the same error both times.

The network tabs shows a request to /api/ingest_manager/setup which fails with a 500

The first time I did this I got but I've not seen it in any deploys since

[elasticmachine]

Pinging @elastic/ingest-management (Feature:EPM)

[ph]

Fix is in #65790 and merge to master 7.x 7.8.

We can close this @jfsiii correct?

[jfsiii]

@ph No we've not been able to confirm this. The snapshots were taken before our fix was in. We'll have to wait until Monday (or Sat?) to see.

[ph]

thanks @neptunian and @jfsiii for followup this