Allow skipping PIN setup screen

So that setup wizard can show PIN option by default.

Test: Added Robolectric and instrumentation tests
Bug: 38509560
Change-Id: Id72744dd444b9b026ca5f28f230bae3bec254b2f
(cherry picked from commit 0f897d79f698920f1c0e0c102a7985704ffa196e)
10 files changed