Added Image.deprecate, ImageApiMockTest completed, removed ImageApiExpec...

...tTest

What do you think of the format of the ImageApiMockTest?

If it looks good, ill start converting others to a similar format. 
this is a little complicated, as we don't need to hook into lifecycle. just api().images() directly, or add a method at the end.

```java
ImageApi images(){
 return api().images();
}
```