Clean up NFR test result formatting

Problem: Some results files added extra newlines, causing our formatter to fail. Also, error log files were way too large for feasible parsing.

Solution: Remove extra newlines, and only include error logs instead of full log files.

.github/workflows/nfr.yml

@@ -4,11 +4,11 @@ on:
   workflow_dispatch:
     inputs:
       test_label:
-        description: NFR test to run. Choose between performance, upgrade, scale, or all
+        description: NFR test to run. Choose between a specific test or all tests
         required: true
         default: all
         type: choice
-        options: [performance, upgrade, scale, all]
+        options: [performance, upgrade, scale, zero-downtime-scale, reconfiguration, all]
       version:
         description: Version of NGF under test
         required: true

tests/suite/reconfig_test.go

@@ -24,7 +24,7 @@ import (
 )
 
 // Cluster node size must be greater than or equal to 4 for test to perform correctly.
-var _ = Describe("Reconfiguration Performance Testing", Ordered, Label("reconfiguration", "nfr"), func() {
+var _ = Describe("Reconfiguration Performance Testing", Ordered, Label("nfr", "reconfiguration"), func() {
 	const (
 		// used for cleaning up resources
 		maxResourceCount = 150
@@ -627,7 +627,6 @@ const reconfigResultTemplate = `
 {{- range .EventsBuckets }}
 	- {{ .Le }}ms: {{ .Val }}
 {{- end }}
-
 `
 
 func writeReconfigResults(dest io.Writer, results reconfigTestResults) error {

tests/suite/scale_test.go

@@ -187,7 +187,7 @@ The logs are attached only if there are errors.
 		Expect(err).ToNot(HaveOccurred())
 
 		logLines := strings.Split(logs, "\n")
-		errors := 0
+		var errors []string
 
 	outer:
 		for _, line := range logLines {
@@ -198,22 +198,24 @@ The logs are attached only if there are errors.
 			}
 			for _, substr := range substrings {
 				if strings.Contains(line, substr) {
-					errors++
+					errors = append(errors, line)
 					continue outer
 				}
 			}
 		}
 
-		// attach full logs
-		if errors > 0 {
+		// attach error logs
+		if len(errors) > 0 {
 			f, err := os.Create(fileName)
 			Expect(err).ToNot(HaveOccurred())
 			defer f.Close()
 
-			_, err = io.WriteString(f, logs)
-			Expect(err).ToNot(HaveOccurred())
+			for _, e := range errors {
+				_, err = io.WriteString(f, fmt.Sprintf("%s\n", e))
+				Expect(err).ToNot(HaveOccurred())
+			}
 		}
-		return errors
+		return len(errors)
 	}
 
 	runTestWithMetricsAndLogs := func(testName, testResultsDir string, test func()) {
@@ -797,8 +799,6 @@ var _ = Describe("Zero downtime scale test", Ordered, Label("nfr", "zero-downtim
 	})
 
 	AfterAll(func() {
-		_, err := fmt.Fprintln(outFile)
-		Expect(err).ToNot(HaveOccurred())
 		Expect(outFile.Close()).To(Succeed())
 
 		// restoring NGF shared among tests in the suite