feat(ngMock): add support of mocha tdd interface

Closes angular#7489

Author: sagens42

src/ngMock/.jshintrc

@@ -18,8 +18,6 @@
   "browser": true,
   "globals": {
     "angular": false,
-    "expect": false,
-    "beforeEach": false,
-    "afterEach": false
+    "expect": false
   }
 }

src/ngMock/angular-mocks.js

@@ -1976,11 +1976,11 @@ if(window.jasmine || window.mocha) {
       };
 
 
-  beforeEach(function() {
+  (window.beforeEach || window.setup)(function() {
     currentSpec = this;
   });
 
-  afterEach(function() {
+  (window.afterEach || window.teardown)(function() {
     var injector = currentSpec.$injector;
 
     currentSpec.$injector = null;