Skip test requiring cratedb server in short test mode

plugins/outputs/cratedb/cratedb_test.go

@@ -91,6 +91,10 @@ VALUES
 }
 
 func Test_escapeValue(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping integration test in short mode")
+	}
+
 	tests := []struct {
 		Val  interface{}
 		Want string