test: cleanup systemtest init (#12448)

we don't need to upload apmpackage so we can cleanup the init code.
Avoid cleaning es during init, it should be cleaned in specific tests to
support the -count flag.

systemtest/main_test.go

@@ -18,49 +18,15 @@
 package systemtest
 
 import (
-	"fmt"
 	"log"
 	"os"
 	"testing"
-
-	"golang.org/x/sync/errgroup"
 )
 
 func TestMain(m *testing.M) {
-	var errg errgroup.Group
-
-	errg.Go(func() error {
-		log.Println("INFO: starting stack containers...")
-		if err := StartStackContainers(); err != nil {
-			return fmt.Errorf("failed to start stack containers: %w", err)
-		}
-		return nil
-	})
-
-	if err := errg.Wait(); err != nil {
-		log.Fatal(err)
-	}
-
-	errg.Go(func() error {
-		log.Println("INFO: cleaning up Elasticsearch...")
-		if err := cleanupElasticsearch(); err != nil {
-			return fmt.Errorf("failed to cleanup Elasticsearch: %w", err)
-		}
-
-		return nil
-	})
-
-	errg.Go(func() error {
-		log.Println("INFO: setting up fleet...")
-		if err := InitFleet(); err != nil {
-			return fmt.Errorf("failed to setup fleet: %w", err)
-		}
-
-		return nil
-	})
-
-	if err := errg.Wait(); err != nil {
-		log.Fatal(err)
+	log.Println("INFO: starting stack containers...")
+	if err := StartStackContainers(); err != nil {
+		log.Fatalf("failed to start stack containers: %v", err)
 	}
 
 	log.Println("INFO: running system tests...")