add ssh pkg

test/e2e/pkg/ssh/ssh.go

@@ -0,0 +1,33 @@
+package ssh
+
+import (
+	"os"
+	"path/filepath"
+
+	"golang.org/x/crypto/ssh"
+	"golang.org/x/crypto/ssh/knownhosts"
+)
+
+func Exec(cfg *ssh.ClientConfig, addr, cmd string) error {
+	c, err := ssh.Dial("tcp", addr, cfg)
+	if err != nil {
+		return err
+	}
+	s, err := c.NewSession()
+	defer s.Close()
+	err = s.Run(cmd)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func NewClientConfig(key string) (*ssh.ClientConfig, error) {
+	hkc, err := knownhosts.New(filepath.Join(os.Getenv("HOME"), ".ssh", "known_hosts"))
+	if err != nil {
+		return nil, err
+	}
+	return &ssh.ClientConfig{
+		HostKeyCallback: hkc,
+	}, nil
+}