Don't allow underscores in variant names (#9182)

* Don't allow underscores in variant names

* forgot test files

* Update test data

scripts/collect-snmp-data.php

@@ -98,6 +98,10 @@ if (isset($options['v'])) {
     $variant = $options['variant'];
 }
 
+if (str_contains($variant, '_')) {
+    exit("Variant name cannot contain an underscore (_).\n");
+}
+
 echo "OS: $target_os\n";
 echo "Module(s): $modules_input\n";
 if ($variant) {