update winrm to use keepalives

vendor/github.com/masterzen/winrm/auth.go

@@ -3,7 +3,9 @@ package winrm
 import (
 	"fmt"
 	"io/ioutil"
+	"net"
 	"strings"
+	"time"
 
 	"github.com/masterzen/azure-sdk-for-go/core/http"
 	"github.com/masterzen/azure-sdk-for-go/core/tls"
@@ -22,10 +24,15 @@ func (c *ClientAuthRequest) Transport(endpoint *Endpoint) error {
 	}
 
 	transport := &http.Transport{
+		Proxy: http.ProxyFromEnvironment,
 		TLSClientConfig: &tls.Config{
 			InsecureSkipVerify: endpoint.Insecure,
 			Certificates:       []tls.Certificate{cert},
 		},
+		Dial: (&net.Dialer{
+			Timeout:   30 * time.Second,
+			KeepAlive: 30 * time.Second,
+		}).Dial,
 		ResponseHeaderTimeout: endpoint.Timeout,
 	}
 

vendor/github.com/masterzen/winrm/endpoint.go

@@ -18,6 +18,8 @@ type Endpoint struct {
 	HTTPS bool
 	// set the flag true for skipping ssl verifications
 	Insecure bool
+	// if set, used to verify the hostname on the returned certificate
+	TLSServerName string
 	// pointer pem certs, and key
 	CACert []byte // cert auth to intdetify the server cert
 	Key    []byte // public key for client auth connections

vendor/github.com/masterzen/winrm/http.go

@@ -4,8 +4,10 @@ import (
 	"crypto/tls"
 	"fmt"
 	"io/ioutil"
+	"net"
 	"net/http"
 	"strings"
+	"time"
 
 	"github.com/masterzen/winrm/soap"
 )
@@ -44,7 +46,12 @@ func (c *clientRequest) Transport(endpoint *Endpoint) error {
 		Proxy: http.ProxyFromEnvironment,
 		TLSClientConfig: &tls.Config{
 			InsecureSkipVerify: endpoint.Insecure,
+			ServerName:         endpoint.TLSServerName,
 		},
+		Dial: (&net.Dialer{
+			Timeout:   30 * time.Second,
+			KeepAlive: 30 * time.Second,
+		}).Dial,
 		ResponseHeaderTimeout: endpoint.Timeout,
 	}