Match underlying networks based on interface name

This patch changes the VcnManagementService policy matching from using
capabilities to match against underlying networks to using iface names.
This is significantly more precise than the network capability matching
logic, as that will not catch any new capabilities that were added (eg
ENTERPRISE, LOW_LATENCY, HIGH_BANDWIDTH, etc).

Bug: 274861645
Test: atest FrameworksVcnTests CtsVcnTestCases
Change-Id: Iea2f5afb242649517f83f85c77355cfdbbf1e202