Test conflict notification work when using cached address

This test catch the regression introduced in r.android.com/1432958.

Bug: 1432958
Test: atest TetheringTest
Change-Id: Id0c1afb5563954ffee1f598a3a5de6a245d77a0e

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1459889

Change-Id: Ie80d4d5d535d70df493cad0a80166d779bc6ab77
Merged-In: Id0c1afb5563954ffee1f598a3a5de6a245d77a0e
(cherry picked from commit 37738b53d7810a6bea521310478bc137975d49d0)
1 file changed