Added setup/tear down data support

1. Added setup data network support.
2. Hook validation status down to data stall recovery manager.
3. Prelimanary changes before removing TransportManager.
4. Added tear down network support.
5. Added initial attach APN support.
6. Added set data profiles at modem support.

Bug: 196597630
Test: atest DataNetworkControllerTest DataProfileManagerTest DataProfileTest DataNetworkTest
Merged-In: I837606d9e91339c66f2e2cff1a3a76d1029750c6
Change-Id: I837606d9e91339c66f2e2cff1a3a76d1029750c6
(cherry picked from commit 69af7793)