Initialize AtomicBoolean for NetworkLogger#mIsLoggingEnabled

Test: cts-tradefed run cts --module DevicePolicyManager --test com.android.cts.devicepolicy.DeviceOwnerTest#testNetworkLoggingWithSingleUser
Bug: 29748723

(cherry picked from commit e4dfd2d0028ff1c7088ec58a4d3eaf8f222311e6)

Change-Id: Ib175f1d57093590b0080f32dc5f6c60ea50066e0
1 file changed