wifi data usage: replaced Wi-Fi SSID with a Wi-Fi network key
1. Used SSID to be a wifi network identity can't separate wifi
data usage when there are two different network with same SSID.
Use a new usage key from in WifiInfo to replace wifi SSID to
solve this issue.
2. To support to query wifi usage per configured Wifi network.
Adding matchWifiNetworkKeys in NetworkTemplate to support querying
multi networkKeys wifi data usage since each configured Wifi
network configuration might be used to connect different Wifi
network.
a. Replaced wording SSID with key of the wifi network
b. Add mock to handle get wifi network key from WifiInfo
c. Add null/empty set unit test to verify matchWifiNetworkKeys
Bug: 197520752
Bug: 126299427
Test: atest -c NetworkTemplateTest
Test: atest -c NetworkStatsServiceTest
Test: atest -c NetworkPolicyManagerServiceTest
Change-Id: Id7d66f6548dd1b4e657db8d7427213293618b406
2 files changed