Temporarily disable NetworkPermissionDefault in cuttlefish and tiny fix

This test is broken since ab/5604620.
So disable for now, and wait for real solution.

Also a tiny change for fixing wrong result description of NDC command.
(ndc network default set netid)

Bug: 133653863
Bug: 133714377
Test: built, flashed, booted
          system/netd/tests/runtests.sh
      Run test case "NetworkPermissionDefault" manually in cuttlefish
      to verify that the test is skipped.

Merged-In: I87f37a7f3c77d9c601a4e62ba335bf3c42699d3e
(cherry picked from commit cf4800e1)

Change-Id: I5dbc02d9f4969e42c6fbb4760e2f989849b7734d