tracing tests: Mkdir failed: mkdir /tmp2: file exists

[kkourt]

Using the new test option (-disable-tetragon-logs, #237) I'm seeing:

--- PASS: TestKprobeObjectOpen (2.78s)  
=== RUN   TestKprobeObjectOpenMount     
    kprobe_test.go:583: Mkdir failed: mkdir /tmp2: file exists
    kprobe_test.go:584:                 
--- SKIP: TestKprobeObjectOpenMount (0.00s)
=== RUN   TestKprobeObjectMultiValueOpen
    jsonchecker.go:132: jsonTestCheck: opening: /tmp/tetragon.gotest.TestKprobeObjectMultiValueOpen.359677843.json
    filenames.go:60: deleting export file for TestKprobeObjectMultiValueOpen (/tmp/tetragon.gotest.TestKprobeObjectMultiValueOpen.359677843.json)
--- PASS: TestKprobeObjectMultiValueOpen (2.75s)
=== RUN   TestKprobeObjectMultiValueOpenMount
    kprobe_test.go:583: Mkdir failed: mkdir /tmp2: file exists
    kprobe_test.go:584:      

Which points to:

tetragon/pkg/sensors/tracing/kprobe_test.go

Lines 578 to 584 in 0c08c89

	mntPath := "/tmp"
	if useMount == true {
	mntPath = mountPath
	if err := os.Mkdir(mntPath, 0755); err != nil {
	t.Logf("Mkdir failed: %s\n", err)
	t.Skip()

We should probably fix this since the test is skipped. I think the best option would be to create a temp directory (https://pkg.go.dev/os#MkdirTemp) for each test and remove it afterwards.

[jrfastab]

fixed here. 4351d2c