Move to vendor

Signed-off-by: Olivier Gambier <olivier@docker.com>

vendor/github.com/bugsnag/panicwrap/monitor_windows.go

@@ -0,0 +1,7 @@
+package panicwrap
+
+import "fmt"
+
+func monitor(c *WrapConfig) (int, error) {
+	return -1, fmt.Errorf("Monitor is not supported on windows")
+}