cleanup: address gocritic warnings

Add explanation to nolint directives.

Issue reported:
whyNoLint: include an explanation for nolint directive (gocritic)

Signed-off-by: Yug <yuggupta27@gmail.com>

internal/util/csiconfig_test.go

@@ -32,7 +32,8 @@ func cleanupTestData() {
 	os.RemoveAll(basePath)
 }
 
-// nolint: gocyclo
+// TODO: make this function less complex
+// nolint:gocyclo // complexity needs to be reduced.
 func TestCSIConfig(t *testing.T) {
 	var err error
 	var data string