[Thread] rename BorderRouterConfiguration to OtDaemonConfiguration

This is a no-op name refactoring CL to prepare for supporting Thread
in mobile use cases where Thread won't operate as a Border Router.

Flag: EXEMPT AIDL interface change (plus it just changes names)

Change-Id: Ib27bcb5b9cd5e9d04db720fde356be15e90068fa
1 file changed