Increase timeout of restart integration tests

See merge request !239

integration-tests/code/testRestartOfKMSTest/testRestartOfKMS_test.go

@@ -191,7 +191,7 @@ func TestRestartOfKMS(t *testing.T) { //nolint:gocyclo
 				t.Errorf("Error restarting KMS: %s", err)
 				return
 			}
-			time.Sleep(10 * time.Second)
+			time.Sleep(30 * time.Second)
 		}
 	}
 }