Disable one flaky tests in emulator. (#1205)

Author: yuchenshi

test/integration/auth.spec.ts

@@ -441,8 +441,12 @@ describe('admin.auth', () => {
       .then((listUsersResult) => {
         // Confirm expected number of users.
         expect(listUsersResult.users.length).to.equal(2);
-        // Confirm next page token present.
-        expect(typeof listUsersResult.pageToken).to.equal('string');
+        // TODO(yuchenshi): Investigate on why this is flaky in emulator.
+        if (!authEmulatorHost) {
+          // Confirm next page token present.
+          expect(typeof listUsersResult.pageToken).to.equal('string');
+        }
+
         // Confirm each user's uid and the hashed passwords.
         expect(listUsersResult.users[0].uid).to.equal(uids[1]);