Add mainlineModuleVersion in WifiMetrics

Add mainlineModuleVersion in WifiMetrics and use getLongVersionCode() to
extract mainline module version.

Updated-PDD: TRUE
Bug: 157944630
Test: atest com.android.server.wifi
Test: manual test with adb shell dumpsys wifi | grep -C 10
WifiHealthMonitor

Change-Id: I9add15029014e549c1644244e130d8e7d4237d33
6 files changed