APM Server version 7.10

No significant changes.

Transaction metrics aggregation now flushes on shutdown, respecting apm-server.shutdown_timeout 3971
De-dot Jaeger process tag keys, fixing indexing errors when using jaeger-php 4191
Fix json schema validation on metadata.service.* fields 4142
Carriage returns are now stripped from source-mapped context source lines 4348
Fix regression where policy_name was ignored in ILM setup 4354

Changed error messages for invalid events due to internal changes of decoder logic 4261

Use peer.address for destinationService.Resource if peer.address is not given on Jaeger span 3975
Add event.duration to API request logs 4030
Set destination.service.* from http.url for Jaeger spans 4046
Use service.version for Metadata.Service.Version when converting a Jaeger span 4061
Report basic telemetry 4055
Add transaction.experience fields 4056
Upgrade Go to 1.14.7 4067
Aggregate service destination span metrics 4077
Added apm-server.kibana.headers configuration 4087
Add a new Docker image based on UBI minimal 8 to packaging. 4105
Add event.outcome to transactions and spans 4064
Add event.outcome to aggregated transaction metrics 4110
Set event.outcome for Jaeger spans based on http.status_code 4127
Set event.outcome for transactions and spans based on http.status_code 4165
Add mapping for system.process.cgroup.* metrics 4176
Use transaction.sample_rate to calculate transaction metrics 4212
Add longtask metric fields to transaction.experience 4230

A big thank you to @tobiasstadler for their contributions to this release!