virtio-fs: Update virtiofs daemon parameters

With the latest version of virtiofsd, some changes have been made
to the socket path parameter. This needs to be updated in the cloud
hypervisor codebase, so that our CI keeps running correctly.

Fixes #611

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

docs/fs.md

@@ -26,7 +26,7 @@ _Run virtiofsd_
 ```bash
 ./virtiofsd \
     -d \
-    -o vhost_user_socket=/tmp/virtiofs \
+    --socket-path=/tmp/virtiofs \
     -o source=/tmp/shared_dir \
     -o cache=none
 ```

src/main.rs

@@ -1718,10 +1718,7 @@ mod tests {
 
         // Start the daemon
         let child = Command::new(virtiofsd_path.as_str())
-            .args(&[
-                "-o",
-                format!("vhost_user_socket={}", virtiofsd_socket_path).as_str(),
-            ])
+            .args(&[format!("--socket-path={}", virtiofsd_socket_path).as_str()])
             .args(&["-o", format!("source={}", shared_dir).as_str()])
             .args(&["-o", format!("cache={}", cache).as_str()])
             .spawn()