kubelet/container: Move pty*.go to container runtime package.

This makes the labeld pty wrapper available for both container runtime.

pkg/kubelet/container/pty_linux.go

@@ -0,0 +1,30 @@
+// +build linux
+
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package container
+
+import (
+	"os"
+	"os/exec"
+
+	"github.com/kr/pty"
+)
+
+func StartPty(c *exec.Cmd) (*os.File, error) {
+	return pty.Start(c)
+}

pkg/kubelet/container/pty_unsupported.go

@@ -0,0 +1,28 @@
+// +build !linux
+
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package container
+
+import (
+	"os"
+	"os/exec"
+)
+
+func StartPty(c *exec.Cmd) (pty *os.File, err error) {
+	return nil, nil
+}