Update Azure Go SDK to v19.0.0

vendor/github.com/Azure/go-autorest/autorest/utility.go

@@ -20,6 +20,7 @@ import (
 	"encoding/xml"
 	"fmt"
 	"io"
+	"net"
 	"net/http"
 	"net/url"
 	"reflect"
@@ -216,3 +217,12 @@ func IsTokenRefreshError(err error) bool {
 	}
 	return false
 }
+
+// IsTemporaryNetworkError returns true if the specified error is a temporary network error or false
+// if it's not.  If the error doesn't implement the net.Error interface the return value is true.
+func IsTemporaryNetworkError(err error) bool {
+	if netErr, ok := err.(net.Error); !ok || (ok && netErr.Temporary()) {
+		return true
+	}
+	return false
+}