As part of the [move to Java 11](https://github.com/Azure/azure-functions-java-worker/issues/120) we should support standard [HttpRequest](https://docs.oracle.com/en/java/javase/11/docs/api/java.net.http/java/net/http/HttpRequest.html)
As part of the move to Java 11 we should support standard HttpRequest