aya/test/integration-ebpf
Tamir Duberstein 6fc09ca07a
integration-test: build-dep on integration-ebpf
Remove the manual dependency tracking machinery in
integration-test/build.rs in favor of a build-dependency on
integration-ebpf. This required adding an empty lib.rs to create the
library target.

This allows integration-test/build.rs to be ignorant of bpf-linker.
Remove that in favor of the logic now in integration-ebpf.
..
.cargo integration-ebpf: add cargo config
src integration-test: build-dep on integration-ebpf
Cargo.toml integration-ebpf: invalidate on bpf-linker
build.rs integration-ebpf: invalidate on bpf-linker
rust-toolchain.toml integration-test: use nightly toolchain with ebpf