Invalidate dst caches when changing network permissions.

Bug: 64103722
Test: builds
Test: connected socket UDP traffic switches to wifi when cell goes into background
Change-Id: I22e618be40d61be6d5f56a6fc4e5a71e1606c2f8
Merged-In: I22e618be40d61be6d5f56a6fc4e5a71e1606c2f8
(cherry picked from commit c6e1457333878659a69d301065cf31e09470866e)
3 files changed