Implement host service manager

On the host, after

  setDefaultServiceManager(createRpcDelegateServiceManager())

is called, defaultServiceManager() will return
a service manager delegate that calls into the service
manager on the device.

Test: binderHostDeviceTest with servicedispatcher installed
Bug: 190233850

Change-Id: I44f9d2e2419883e242fea0472d702f559dd0b283
5 files changed