This access is going away for apps. Move these tests to hostside
tests to be executed by the shell domain.
Test: atest cts/hostsidetests/net/src/com/android/cts/net/ProcNetTest.java
Test: atest android.net.cts.ConnectivityManagerTest
Test: atest android.net.cts.IpSecSysctlTest
Test: atest android.net.cts.MultinetworkSysctlTest
Bug: 116053204
Change-Id: Id7e867184dd344a2d877515956e76019d627788b