* Enable strict context check and fix some context issues.
* Drift
* Drift and cache
* Exclude grizzly include akka
* Grizzly, scala
* ForkJoin worker
* webflux comment, grizzly typo
* Give up on akka for now
* threadpool
* Fallback on grizzly, wait for completion in executor cancellation tests
* Hystrix
* ratpack
* Cleanups
* Move and rename NetPeerUtils
* Rename NetPeerUtils to NetPeerAttributes; inject instance instead of using a global var
* Rename SpanAttributeSetter to AttributeSetter (might be used to set on AttributesBuilder in the future, who knows)
* Deprecate default BaseTracer constructor: library instrumentations are supposed to inject all dependencies, the javaagent should explicitly pass globals
* fix compilation failure
* Remove peer.service customization from library instrumentation