Enable Settings Search to query private Slices.

The base Uri is now determined by whether a certain config string is set
or not. When the config is set, Settings Search will then be able to
query private Slices, otherwise we'll just provide public ones.

Bug: 141088937
Test: rebuild
Change-Id: I63b689de4491b664a2d6f88867fbbb9b1da38277
1 file changed