Automatic merge from submit-queue (batch tested with PRs 65377, 63837, 65370, 65294, 65376). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
restore pre-1.11 behavior of `kubectl get --template=...`
**Release note**:
```release-note
NONE
```
Restores old behavior to the `--template` flag in `get.go`.
In old releases, providing a `--template` flag value and no `--output` value implicitly assigned a default value ("go-template") to `--output`, printing using the provided template argument.
Example:
```bash
# this should print using GoTemplate printer, but currently does not
$ kubectl get pod foo --template="{{ .metadata.name }}"
```
cc @deads2k @soltysh