Consider allow-in-power-save-except-idle whitelist while updating rules.

Fixes: 37670935
Test: manual &&
      runtest -c com.android.server.NetworkPolicyManagerServiceTest frameworks-services
      cts-tradefed run singleCommand cts-dev -m CtsHostsideNetworkTests -t \
            com.android.cts.net.HostsideRestrictBackgroundNetworkTests
Change-Id: I3520ed24147b9b6dd9e7b19aa9a90dd8c0b371ad