[VCN07.7] Add NOT_VCN_MANAGED capability into ConnectivityControllerTest

Follow-up from aosp/1549897, the capability will not be in
default capabilities, but will be in most of the NetworkRequests
which requires internet. Thus, add the capabilities into all
test code that simulates capabilities of network by
default to provide backward compatibility.

Test: atest com.android.server.job.controllers.ConnectivityControllerTest
Bug: 179768816
Bug: 175662146
Change-Id: Ifeb8b172d069511756a6f6fcc0444f2ff2b06a96