Extend ApfIntegrationTest to cover VSR-16 requirements

Updated ApfIntegrationTest to validate APFv6 support and minimum APF RAM
size (4000 bytes) for device with VSR API level 202504, as mandated by
the VSR-16 specification.

Bug: 383959066
Test: TH
Change-Id: I8a54ab696d9633534586e0a2ee9902f3759ca420
1 file changed