Fix getUri() in HttpRequest has been deprecated

When reading the code, I found that the method used has been deprecated due to the upgrade of the netty component. The main methods are as follows:

io.netty.handler.codec.http#HttpRequest

@Deprecated
HttpMethod getMethod();
Deprecated. Use method() instead.

@Deprecated
String getUri()
Deprecated. Use uri() instead.
io.netty.handler.codec.http#DefaultHttpResponse

@Deprecated
public HttpResponseStatus getStatus()

Deprecated. Use status()  instead.

WebHdfsHandler.java:125:35:[deprecation] getUri() in HttpRequest has been deprecated

HostRestrictingAuthorizationFilterHandler.java:200:27:[deprecation] getUri() in HttpRequest has been deprecated