Count number of connections with MAC rand

Add into ConnectionEvent a boolean to indicate whether this connection
will be using a randomized MAC address.

Bug: 124121205
Test: unit tests
Test: Connect to network with mac randomization on/off, run adb shell
dumpsys wifi | grep ConnectionEvent -A50 and verify printout.

Change-Id: Ia66107df9a8b31ca058fe50ffe8bc17b227f18ec
2 files changed