Tamir Duberstein 89bc255f1d
aya: MapData::fd is non-optional
The primary driver of change here is that `MapData::create` is now a
factory function that returns `Result<Self, _>` rather than mutating
`&mut self`. The remaining changes are consequences of that change, the
most notable of which is the removal of several errors which are no
longer possible.
..
tests aya: MapData::fd is non-optional
lib.rs integration-test: De-duplicate BTF relocation test
tests.rs integration-test: build one binary instead of N
utils.rs test: add the possibility to run a test inside a network namespace