Merge pull request #33071 from lojies/sshreturnerr

Automatic merge from submit-queue

add err to return

**What this PR does / why we need it**:
when err != nil,it should return false, err

**Which issue this PR fixes**: 

**Special notes for your reviewer**:

**Release note**:
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pkg/ssh/ssh.go

@@ -217,7 +217,7 @@ func runSSHCommand(dialer sshDialer, cmd, user, host string, signer ssh.Signer,
 		err = wait.Poll(5*time.Second, 20*time.Second, func() (bool, error) {
 			fmt.Printf("error dialing %s@%s: '%v', retrying\n", user, host, err)
 			if client, err = dialer.Dial("tcp", host, config); err != nil {
-				return false, nil
+				return false, err
 			}
 			return true, nil
 		})