instrument HTTP/1 and HTTP/2 requests on the same server

fix dispatcher metric tests assertions

add token authentication to the InfluxDB reporter, fixes kamon-io#1107 (

kamon-io#1110)

make adding the db.statement tag configurable in jdbc calls (kamon-io…

…#1103)

* make adding the db.statement tag configurable in jdbc calls

* add the db statement setting to the Slick tests

allow for namespaced environment tags (kamon-io#1101)

include environment tags in the Kamon APM reporter

handle HttpEntity.Default in the Akka HTTP instrumentation

Add jvm threads states metrics (kamon-io#1075)

* add jvm threads states  metrics

* Update instrumentation/kamon-system-metrics/src/main/scala/kamon/instrumentation/system/jvm/JvmMetrics.scala

Co-authored-by: Ivan Topolnjak <[email protected]>

* rename timed_waited to timed-waited

* remove trailing comma for scala 2.11 compatibility

Co-authored-by: Ivan Topolnjak <[email protected]>

proactively drop old spans in the APM reporter

Ensure scheduler startup in Play applications