Merge pull request #59104 from nikhita/sample-controller-apps-v1

Automatic merge from submit-queue. 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>.

sample-controller: document minimum kubernetes version

In https://github.com/kubernetes/kubernetes/pull/58446, the sample-controller started using `apps/v1` deployments since they became GA in 1.9.

This means that sample-controller does not support versions below 1.9.

Fixes kubernetes/sample-controller#9

**Release note**:

```release-note
NONE
```

/assign sttts munnerz

Kubernetes-commit: 971960784927755cbc9423d0ecc19e573de9f391

vendor/k8s.io/apimachinery/pkg/util/yaml/decoder.go

@@ -126,8 +126,8 @@ func (d *YAMLDecoder) Read(data []byte) (n int, err error) {
 	}
 
 	// caller will need to reread
-	copy(data, d.remaining[:left])
-	d.remaining = d.remaining[left:]
+	copy(data, d.remaining[:len(data)])
+	d.remaining = d.remaining[len(data):]
 	return len(data), io.ErrShortBuffer
 }