Fix smoke test script preamble (#676)

* Fix smoke test script preamble.

* Apply suggestions from code review

* Fix indentation

Co-authored-by: Helio Machado <0x2b3bfa0+git@googlemail.com>

Author: Domas Monkus

task/task_smoke_test.go

@@ -8,7 +8,6 @@ import (
 	"strings"
 	"testing"
 	"time"
-
 	"io/ioutil"
 	"path/filepath"
 
@@ -91,15 +90,14 @@ func TestTaskSmoke(t *testing.T) {
 		testName = "smoke test"
 	}
 
-	script := `
-          #!/bin/sh -e
-          test -v TEST_GPU && nvidia-smi
-          mkdir --parents cache output
-          touch cache/file
-          echo "$ENVIRONMENT_VARIABLE_DATA" | tee --append output/file
-          sleep 60
-          cat output/file
-        `[1:]
+	script := `#!/bin/sh -e
+		test -v TEST_GPU && nvidia-smi
+		mkdir --parents cache output
+		touch cache/file
+		echo "$ENVIRONMENT_VARIABLE_DATA" | tee --append output/file
+		sleep 60
+		cat output/file
+	`
 
 	for provider, enabled := range providers {
 		if !enabled {