[MAC rand] maintaining an aggressive MAC

infrastructure for aggressive randomization mode.
ClientModeImpl will maintain a randomized MAC address that is
periodically updated for connecting to networks in aggressive mode.

Bug: 137796328
Test: unit tests
Change-Id: I1db5715980b8c1a2e6ee27705316922fe1f3e26c
2 files changed
tree: f0c88e774d3e1ee783a5449a3bf21a71d598bb16
  1. service/
  2. PREUPLOAD.cfg