为WebDriver 设置proxy（IE设置代理）

IE driver

String PROXY = "http://proxy:8083";
org.openqa.selenium.Proxy proxy = new org.openqa.selenium.Proxy();
proxy.setHttpProxy(PROXY)
.setFtpProxy(PROXY)
.setSslProxy(PROXY);

DesiredCapabilities ds = DesiredCapabilities.internetExplorer();
ds.setCapability(InternetExplorerDriver.INTRODUCE_FLAKINESS_BY_IGNORING_SECURITY_DOMAINS, true);
ds.setCapability("ignoreProtectedModeSettings", true);
ds.setCapability(CapabilityType.PROXY, proxy);
WebDriver driver = new InternetExplorerDriver(ds);