[BUGFIX beta] Ensure container can still be provided to .create.

In Ember versions until 2.3.0 it was common to provide a `container`
property (if needed) when creating instances of a factory manually. This
might look like:

```
let Foo = container.lookupFactory('model:foo');
let instance = Foo.create({
  container
});
```

Many addons did this (examples include ember-cp-validations and ember-data).

Our initial implementation of the deprecated `container` property on extendable
factories used `Object.defineProperty` to ensure calling
`instance.container` returned the correct value. Unfortunately, we only
defined a getter which means calling `Foo.create({ container });`
triggers the following error:

```
Cannot set property container of [object Object] which has only a getter
```

This change adds a setter (with an appropriate deprecation) to prevent
triggering an error.

packages/container/lib/container.js

@@ -4,6 +4,9 @@ import dictionary from 'ember-metal/dictionary';
 import isEnabled from 'ember-metal/features';
 import { setOwner, OWNER } from './owner';
 import { buildFakeContainerWithDeprecations } from 'ember-runtime/mixins/container_proxy';
+import symbol from 'ember-metal/symbol';
+
+const CONTAINER_OVERRIDE = symbol('CONTAINER_OVERRIDE');
 
 /**
  A container used to instantiate and cache objects.
@@ -27,6 +30,7 @@ function Container(registry, options) {
 
   if (isEnabled('ember-container-inject-owner')) {
     this._fakeContainerToInject = buildFakeContainerWithDeprecations(this);
+    this[CONTAINER_OVERRIDE] = undefined;
   }
 }
 
@@ -404,7 +408,19 @@ function injectDeprecatedContainer(object, container) {
       deprecate('Using the injected `container` is deprecated. Please use the `getOwner` helper instead to access the owner of this object.',
                 false,
                 { id: 'ember-application.injected-container', until: '3.0.0', url: 'http://emberjs.com/deprecations/v2.x#toc_injected-container-access' });
-      return container;
+      return this[CONTAINER_OVERRIDE] || container;
+    },
+
+    set(value) {
+      deprecate(
+        `Providing the \`container\` property to ${this} is deprecated. Please use \`Ember.setOwner\` or \`owner.ownerInjection()\` instead to provide an owner to the instance being created.`,
+        false,
+        { id: 'ember-application.injected-container', until: '3.0.0', url: 'http://emberjs.com/deprecations/v2.x#toc_injected-container-access' }
+      );
+
+      this[CONTAINER_OVERRIDE] = value;
+
+      return value;
     }
   });
 }

packages/container/tests/container_test.js

@@ -642,6 +642,28 @@ if (isEnabled('ember-container-inject-owner')) {
 
     equal(otherController.container, 'foo', 'container was not added');
   });
+
+  QUnit.test('An extendable factory can provide `container` upon create, with a deprecation', function(assert) {
+    let registry = new Registry();
+    let container = registry.container();
+
+    registry.register('controller:post', factory());
+
+    let PostController = container.lookupFactory('controller:post');
+
+    let postController;
+
+    expectDeprecation(function() {
+      postController = PostController.create({
+        container: 'foo'
+      });
+    }, /Providing the \`container\` property to .+ is deprecated. Please use \`Ember.setOwner\` or \`owner.ownerInjection\(\)\` instead to provide an owner to the instance being created/);
+
+    expectDeprecation(function() {
+      let c = postController.container;
+      assert.equal(c, 'foo', 'the `container` provided to `.create`was used');
+    }, 'Using the injected `container` is deprecated. Please use the `getOwner` helper instead to access the owner of this object.');
+  });
 } else {
   QUnit.test('A `container` property is appended to every instantiated object', function() {
     let registry = new Registry();