Enable device identifier check for 3P apps

Bug: 117781266
Test: cts-tradefed run cts -m CtsTelephony3TestCases
Test: cts-tradefed run cts -m CtsPermissionTestCases -t android.permission.cts.TelephonyManagerPermissionTest
Test: cts-tradefed run cts -m CtsTelephonyTestCases -t android.telephony.cts.TelephonyManagerTest
Test: cts-tradefed run cts -m CtsDevicePolicyManagerTestCases -t \
      com.android.cts.devicepolicy.DeviceOwnerTest#testDeviceOwnerCanGetDeviceIdentifiers
Test: cts-tradefed run cts -m CtsDevicePolicyManagerTestCases -t \
      com.android.cts.devicepolicy.ManagedProfileTest#testProfileOwnerCanGetDeviceIdentifiers
Test: cts-tradefed run cts -m CtsDevicePolicyManagerTestCases -t \
      com.android.cts.devicepolicy.ManagedProfileTest#testProfileOwnerCannotGetDeviceIdentifiersWithoutPermission
Test: cts-tradefed run cts -m CtsDevicePolicyManagerTestCases -t \
      com.android.cts.devicepolicy.DeviceOwnerTest#testDeviceOwnerCannotGetDeviceIdentifiersWithoutPermission

Change-Id: Ia511d6d566ab1ceacfedcd45f45500a846fcb983
diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index 9778acb..b80b0b7 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -370,6 +370,7 @@
                     Settings.Global.PRIVATE_DNS_DEFAULT_MODE,
                     Settings.Global.PRIVILEGED_DEVICE_IDENTIFIER_CHECK_ENABLED,
                     Settings.Global.PRIVILEGED_DEVICE_IDENTIFIER_TARGET_Q_BEHAVIOR_ENABLED,
+                    Settings.Global.PRIVILEGED_DEVICE_IDENTIFIER_3P_CHECK_RELAXED,
                     Settings.Global.PROVISIONING_APN_ALARM_DELAY_IN_MS,
                     Settings.Global.RADIO_BLUETOOTH,
                     Settings.Global.RADIO_CELL,