wifi: Fix unit tests to run on R devices

Test modules fixed:
i. WifiInfoTest
ii. OemPaidWifiNetworkFactoryTest
iii. WifiNetworkFactoryTest
iv. WifiShellCommandTest
v. WifiPermissionsUtilTest

Bug: 179512200
Test: atest com.android.server.wifi
Change-Id: Idb9b7bcd0a2bebc0ea6ee9702843e8e132d5f93c
5 files changed