tests: Use shorter timeouts for async code

0.1s instead of 10s. Make the run go a bit quicker!

Author: Krinkle

test/fixtures/async-test.js

@@ -9,7 +9,7 @@ test('a', 2, function(assert){
         assert.ok(true, 'test a1');
         assert.ok(true, 'test a2');
         done();
-    }, 10000);
+    }, 100);
 });
 
 test('2', 1, function (){

test/fixtures/coverage-code.js

@@ -5,7 +5,7 @@ exports.myMethod = function() {
 exports.myAsyncMethod = function(callback) {
     setTimeout(function() {
         callback(123);
-    }, 10000);
+    }, 100);
 };
 
 exports.myOtherMethod = function(callback) {