- Closes#1318.
- Closes#1378.
- Reduces the complexity and coupling for IP allocation.
- Runtimes connect to networks for the life of the running container.
The runtime shuts down on connection loss.
- Networks automatically deallocate a runtime's IP address and hostname
record on connection loss.
- Removes AllocatedAttachment as this is no longer necessary. The
`bootstrap()` XPC now takes a `NetworkBootstrapInfo` array which
parallels the attachments in the bundle config and provides the network
plugin attributes needed to create VM network interface configurations.
## Type of Change
- [x] Bug fix
- [ ] New feature
- [ ] Breaking change
- [ ] Documentation update
## Motivation and Context
Simplify IP allocation and make deallocation more reliable.
## Testing
- [x] Tested locally
- [ ] Added/updated tests
- [ ] Added/updated docs
