networkAttributes is a legacy configuration that is now only used to
configure which legacy type networks are supported, and what the restore
timer is for that network type, for the deprecated
startUsingNetworkFeature API.
Use a dedicated resource for the restore timers, and build supported
legacy network types using hasSystemFeature for wifi, wifi p2p,
bluetooth, proxy types, and TelephonyManager.isDataCapable for the
mobile types.
Bug: 146206136
Test: atest FrameworksNetTests
Change-Id: I3a771d3de6c5e912f18d2834e3a50af797ac4991
5a42a5ff0b