Add migration logic for D2D settings.

Allow settings from older versions of DB to be BR'd.

Test: make, go/br-per-sim-settings-test-doc
Bug: 183593594
Bug: 183593858

Change-Id: I9351c18607b1536841287b843db425d3a95c6535
Merged-In: I9351c18607b1536841287b843db425d3a95c6535
1 file changed