BREAKING CHANGE:
- Before, a `EmbeddedViewRef` used to have methods for
setting variables. Now, a user has to pass in a context
object that represents all variables when an `EmbeddedViewRef`
should be created.
- `ViewContainerRef.createEmbeddedViewRef` now takes
a context object as 2nd argument.
- `EmbeddedViewRef.setLocal` and `getLocal` have been removed.
Use `EmbeddedViewRef.context` to access the context.
- `DebugNode.locals` has been removed. Use the new methods `DebugElement.references`
to get the references that are present on this element,
or `DebugElement.context` to get the context of the `EmbeddedViewRef` or the component to which the element belongs.
Closes#8321
