enable SystemGC events

Author: richardstartin

dd-java-agent/agent-profiling/profiling-controller-jfr/src/main/resources/jfr/dd.jfp

@@ -273,6 +273,7 @@ jdk.ContainerMemoryUsage#enabled=true
 jdk.ContainerMemoryUsage#period=everyChunk
 jdk.ContainerIOUsage#enabled=true
 jdk.ContainerIOUsage#period=everyChunk
+jdk.SystemGC#enabled=true
 # Datadog events
 datadog.Scope#enabled=true
 datadog.Scope#threshold=10 ms

dd-java-agent/agent-profiling/profiling-controller-jfr/src/main/resources/jfr/overrides/comprehensive.jfp

@@ -14,5 +14,6 @@ jdk.ObjectAllocationInNewTLAB#enabled=true
 jdk.ObjectAllocationInNewTLAB#stackTrace=true
 jdk.ObjectAllocationOutsideTLAB#enabled=true
 jdk.ObjectAllocationOutsideTLAB#stackTrace=true
+jdk.SystemGC#enabled=true
 datadog.ExceptionSample#enabled=true
 datadog.ExceptionCount#enabled=true