When running `dep prune` explicitly, the following message show up:
```
dep prune
Pruning is now performed automatically by dep ensure.
```
However, after the explicit `dep prune`, there are still many files deleted. (Guess `dep ensure` is not complete yet).
This fix did a `dep prune` to clean up unneeded files.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
The `apache/thrift` recently released a new version of `0.11.0`
several days ago. This release is compatible with other packages
and as such, there is no need to pinning the `apache/thrift`
to `master` anymore in Gopkg.toml.
This fix removes the pinning of `apache/thrift` in Gopkg.toml,
and updates all dependencies of coredns.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>