Add a cts test for PermissionMonitor security problem

Add a cts test to check whether app can have netd sytem
permission even the app didn't grant the
CONNECTIVITY_USE_RESTRICTED_NETWORKS permission.

Bug: 144679405
Test: atest android.net.cts.ConnectivityManagerTest
Change-Id: I2c717a11bda43db166a55d343eb752ab45947fe8
Merged-In: I2c717a11bda43db166a55d343eb752ab45947fe8
(cherry picked from commit 73c0f59334d7b81e062c3e9d07e367be8c4ba687, ag/10285567)