listen for SIGTERM in addition to SIGINT when shutting down the supervisor

Author: Dylan-M

cmd/opampsupervisor/main.go

@@ -9,6 +9,7 @@ import (
 	"log"
 	"os"
 	"os/signal"
+	"syscall"
 
 	"github.com/open-telemetry/opentelemetry-collector-contrib/cmd/opampsupervisor/supervisor"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/cmd/opampsupervisor/supervisor/config"
@@ -46,7 +47,7 @@ func runInteractive() error {
 	}
 
 	interrupt := make(chan os.Signal, 1)
-	signal.Notify(interrupt, os.Interrupt)
+	signal.Notify(interrupt, os.Interrupt, syscall.SIGTERM)
 	<-interrupt
 	supervisor.Shutdown()