Repository: grafana/k6-operator (go)

Issue:
tar archive is created on /home/k6 instead of tmp
### Brief summary

That means user should be 65534 or have access rights to that folder.

https://github.com/grafana/k6-operator/blob/main/pkg/resources/jobs/initializer.go#L57

If it is created in /tmp folder, any user could run the tests without any particular uid privilege.

### k6-operator version or image

latest (8.0.0rc3)

### K6 YAML

```yaml
apiVersion: k6.io/v1alpha1
kind: K6
metadata:
  name: k6-sample-with-extensions
  namespace: k6-tests
spec:
  parallelism: 4
  script:
    configMap:
      name: sample-stress-test
      file: test.js
  arguments: --http-debug -o output-prometheus-remote
  runner:
    image: xxxx:latest
```

### Other environment details (if applicable)

_No response_

### Steps to reproduce the problem

Run k6 tests from a namespace with restricted users. For example

  securityContext:
    runAsUser: 1000

### Expected behaviour

Archive stored and read successfully.

### Actual behaviour

Permission denied errors.

Pull request description:
Store archived script to /tmp in initializer
Fixes #160 

Patch:
diff --git a/pkg/resources/jobs/initializer.go b/pkg/resources/jobs/initializer.go
index 59e34d9..3837f8e 100644
--- a/pkg/resources/jobs/initializer.go
+++ b/pkg/resources/jobs/initializer.go
@@ -54,7 +54,7 @@ func NewInitializerJob(k6 *v1alpha1.K6, argLine string) (*batchv1.Job, error) {
 	var (
 		// k6 allows to run archive command on archives too so type of file here doesn't matter
 		scriptName  = script.FullName()
-		archiveName = fmt.Sprintf("./%s.archived.tar", script.Filename)
+		archiveName = fmt.Sprintf("/tmp/%s.archived.tar", script.Filename)
 	)
 	command, istioEnabled := newIstioCommand(k6.Spec.Scuttle.Enabled, []string{"sh", "-c"})
 	command = append(command, fmt.Sprintf(


Test patch:
diff --git a/pkg/resources/jobs/initializer_test.go b/pkg/resources/jobs/initializer_test.go
index 53248e3..861025c 100644
--- a/pkg/resources/jobs/initializer_test.go
+++ b/pkg/resources/jobs/initializer_test.go
@@ -60,7 +60,7 @@ func TestNewInitializerJob(t *testing.T) {
 							Name:            "k6",
 							Command: []string{
 								"sh", "-c",
-								"k6 archive /test/test.js -O ./test.js.archived.tar --out cloud 2> /tmp/k6logs && k6 inspect --execution-requirements ./test.js.archived.tar 2> /tmp/k6logs ; ! cat /tmp/k6logs | grep 'level=error'",
+								"k6 archive /test/test.js -O /tmp/test.js.archived.tar --out cloud 2> /tmp/k6logs && k6 inspect --execution-requirements /tmp/test.js.archived.tar 2> /tmp/k6logs ; ! cat /tmp/k6logs | grep 'level=error'",
 							},
 							Env:          []corev1.EnvVar{},
 							Resources:    corev1.ResourceRequirements{},