misc: vmm: drop extern crate, use modern rust

This commit is part of a series of similar commits.

Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
On-behalf-of: SAP philipp.schuster@sap.com

vmm/src/api/http/http_endpoint.rs

@@ -73,6 +73,8 @@ mod fds_helper {
     use std::fs::File;
     use std::os::fd::{IntoRawFd, RawFd};
 
+    use log::{debug, error, warn};
+
     use crate::api::http::HttpError;
 
     /// Abstraction over configuration types received via the HTTP API that
@@ -172,7 +174,7 @@ mod fds_helper {
 
         if fds_amount > 0 {
             let new_fds = fds.drain(..fds_amount).collect::<Vec<_>>();
-            log::debug!(
+            debug!(
                 "Attaching network FDs received via UNIX domain socket to device: id={:?}, fds={new_fds:?}",
                 cfg.id()
             );

vmm/src/api/http/mod.rs

@@ -15,6 +15,7 @@ use std::sync::mpsc::Sender;
 use std::thread;
 
 use hypervisor::HypervisorType;
+use log::error;
 use micro_http::{
     Body, HttpServer, MediaType, Method, Request, Response, ServerError, StatusCode, Version,
 };