Crash happens in code line `conf.Delegates[0] = delegate` in function TryLoadPodDelegates,
because len(conf.Delegates) is 0.
Signed-off-by: Huanle Han <hanhuanle@caicloud.io>
This changes introduce goreleaser, which does cross-compile and
package, as well as add version into go code. This change also
changes .travis.yml to allow to other users' forked repo.
Change the Network Attachment Selection Annotation long-form
interface name request JSON key from 'interfaceRequest' to
'interface' to conform with the V1 NPWG spec.
