aya/test/integration-test
astoycos b1769678f4 aya/maps: pin for (async)perf_event_array
Implement pinning for perf_event_array and async_perf_event_array.
Additionally make the core MapData.pin method operate on a reference
rather than a mutable reference.

Signed-off-by: astoycos <astoycos@redhat.com>
..
bpf integration-test: Add map pinning coverage
src aya/maps: pin for (async)perf_event_array
Cargo.toml tests: add AF_XDP test using xdpilone
build.rs integration-test: build eBPF for the proper arch