[INTERNAL] Decoupled the TreeBindingAdapter Tests from internal services

- Added Batch-Response support to the FakeService
- Additional fake data for the TreeBindingAdapter.qunit tests

Change-Id: Ifac2b2c98bc2d0c43c5bc9c952ec0f508acf6c68
Merge "[INTERNAL] Decoupled the TreeBindingAdapter Tests from internal services"