Merge "Move TestableNetworkAgent to Common Util Location" am: eef1e2033d am: d71552978c am: 7bf5e7e325 am: 4d44c36ed6

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1908520

Change-Id: Iae6e708f73429ff0e06b0f1abbfab6905c852642