runtime-rs: Supply missing fields of NetworkConfig

`test_networkconfig_to_netconfig` from clh depends on `NetworkConfig` which
has some new fields in this PR. Therefore, this commit gives the test
missing fields.

Signed-off-by: Xuewei Niu <niuxuewei.nxw@antgroup.com>

src/runtime-rs/crates/hypervisor/src/ch/inner_device.rs

@@ -413,7 +413,7 @@ impl TryFrom<ShareFsSettings> for FsConfig {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::Address;
+    use crate::{Address, Backend};
 
     #[test]
     fn test_networkconfig_to_netconfig() {
@@ -424,6 +424,10 @@ mod tests {
             queue_num: 2,
             guest_mac: None,
             index: 1,
+            allow_duplicate_mac: false,
+            use_generic_irq: None,
+            use_shared_irq: None,
+            backend: Backend::default(),
         };
 
         let net = NetConfig::try_from(cfg.clone());