fix: filter unexpected pruns in e2e MultiplePR

Test was failing due to counting unrelated PipelineRuns. Fixed by
filtering
results to only count PipelineRuns matching the test's naming pattern.

error:

```
github_pullrequest_concurrency_multiplepr_test.go:144: assertion failed:
10 (int) != 9 (allPipelinesRunAfterCleanUp int): we should have had 9
kept after cleanup, we got 10: [no-match-ng84l [{Succeeded False
{2025-03-05 13:41:06 +0000 UTC} Cancelled PipelineRun "no-match-ng84l"
was cancelled}] prlongrunnning-fqmf-1-eyle-9tv54 [{Succeeded True
{2025-03-05 13:41:41 +0000 UTC} Succeeded Tasks Completed: 1 (Failed: 0,
Cancelled 0), Skipped: 0}] prlongrunnning-fqmf-2-smfw-xmc6j [{Succeeded
True  {2025-03-05 13:41:56 +0000 UTC} Succeeded Tasks Completed: 1
(Failed: 0, Cancelled 0), Skipped: 0}] prlongrunnning-fqmf-3-oowj-5tk8v
[{Succeeded True  {2025-03-05 13:42:11 +0000 UTC} Succeeded Tasks
Completed: 1 (Failed: 0, Cancelled 0), Skipped: 0}]
prlongrunnning-piwd-1-kpby-fhz29 [{Succeeded True  {2025-03-05 13:40:57
+0000 UTC} Succeeded Tasks Completed: 1 (Failed: 0, Cancelled 0),
Skipped: 0}] prlongrunnning-piwd-2-zmdb-587lp [{Succeeded True
{2025-03-05 13:41:11 +0000 UTC} Succeeded Tasks Completed: 1 (Failed: 0,
Cancelled 0), Skipped: 0}] prlongrunnning-piwd-3-zdht-7p4f6 [{Succeeded
True  {2025-03-05 13:41:26 +0000 UTC} Succeeded Tasks Completed: 1
(Failed: 0, Cancelled 0), Skipped: 0}] prlongrunnning-zunz-1-gctg-gxh4q
[{Succeeded True  {2025-03-05 13:40:12 +0000 UTC} Succeeded Tasks
Completed: 1 (Failed: 0, Cancelled 0), Skipped: 0}]
prlongrunnning-zunz-2-bpsb-sfvr5 [{Succeeded True  {2025-03-05 13:40:26
+0000 UTC} Succeeded Tasks Completed: 1 (Failed: 0, Cancelled 0),
Skipped: 0}] prlongrunnning-zunz-3-hdth-gn9gw [{Succeeded True
{2025-03-05 13:40:41 +0000 UTC} Succeeded Tasks Completed: 1 (Failed: 0,
Cancelled 0), Skipped: 0}]]
```

Signed-off-by: Chmouel Boudjnah <[email protected]>

test/github_pullrequest_concurrency_multiplepr_test.go

@@ -141,9 +141,16 @@ func TestGithubSecondPullRequestConcurrencyMultiplePR(t *testing.T) {
 	for _, pr := range prs.Items {
 		allPipelineRunsNamesAndStatus = append(allPipelineRunsNamesAndStatus, fmt.Sprintf("%s %s", pr.Name, pr.Status.GetConditions()))
 	}
-	assert.Equal(t, len(prs.Items), allPipelinesRunAfterCleanUp, "we should have had %d kept after cleanup, we got %d: %v", allPipelinesRunAfterCleanUp, len(prs.Items), allPipelineRunsNamesAndStatus)
+	// Filter out PipelineRuns that don't match our pattern
+	matchingPRs := []tektonv1.PipelineRun{}
+	for _, pr := range prs.Items {
+		if strings.HasPrefix(pr.Name, "prlongrunnning-") {
+			matchingPRs = append(matchingPRs, pr)
+		}
+	}
+	assert.Equal(t, len(matchingPRs), allPipelinesRunAfterCleanUp, "we should have had %d kept after cleanup, we got %d: %v", allPipelinesRunAfterCleanUp, len(prs.Items), allPipelineRunsNamesAndStatus)
 
-	runcnx.Clients.Log.Infof("success: number of cleaned PR is %d we expected to have %d after the cleanup", len(prs.Items), allPipelinesRunAfterCleanUp)
+	runcnx.Clients.Log.Infof("success: number of cleaned PR is %d we expected to have %d after the cleanup", len(matchingPRs), allPipelinesRunAfterCleanUp)
 
 	if os.Getenv("TEST_NOCLEANUP") != "true" {
 		repository.NSTearDown(ctx, t, runcnx, targetNS)