pick up appName and appname from tests

Author: PavelSafronov

test/tools/unified-spec-runner/entities.ts

@@ -265,8 +265,12 @@ export class UnifiedMongoClient extends MongoClient {
       };
     }
 
-    if (description.uriOptions && description.uriOptions.appName) {
-      options.appName = description.uriOptions.appName;
+    // Test descriptions use `appName` and `appname` interchangeably
+    if (
+      description.uriOptions &&
+      (description.uriOptions.appName != null || description.uriOptions.appname != null)
+    ) {
+      options.appName = description.uriOptions.appName ?? description.uriOptions.appname;
     } else {
       const appNameNonce = new Date().getTime().toString();
       options.appName = `unified-spec-runner-${appNameNonce}`;