test: Remove unnecessary setTimeout and reconfigureServer calls (#9183)

spec/support/testUtils.js

@@ -0,0 +1,18 @@
+// Create Deferred Promise
+function resolvingPromise() {
+  let res;
+  let rej;
+  const promise = new Promise((resolve, reject) => {
+    res = resolve;
+    rej = reject;
+  });
+  promise.resolve = res;
+  promise.reject = rej;
+  return promise;
+}
+
+function sleep(ms) {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+module.exports = { resolvingPromise, sleep };