Metrics for recent connection failure reason

Added histogram corresponding to the number of times recent
connection failure status are reported per
WifiConfiguration.RecentFailureReason. This is mainly to capture
MBO-OCE association rejection feature adoption in APs and
to count number of times NETWORK_NOT_FOUND event is triggered.

Bug: 186026175
Updated-PDD: TRUE
Test: atest com.android.server.WifiMetricsTest
Change-Id: I177e8230ed3216ef34fe87f04ff0ae5135950ac1
5 files changed