Fix faas trigger id attribute name

Author: isaacaflores2

elasticattr/attributes.go

@@ -40,7 +40,8 @@ const (
 	DestinationIP          = "destination.ip"
 	SourceNATIP            = "source.nat.ip"
 	FaaSExecution          = "faas.execution"
-	FaaSTriggerRequestID   = "faas.trigger.request.id"
+	FaaSTriggerRequestID   = "faas.trigger.request_id"
+	HostHostName           = "host.hostname"
 	HostOSPlatform         = "host.os.platform"
 	ProcessRuntimeName     = "process.runtime.name"
 	ProcessRuntimeVersion  = "process.runtime.version"