fix test cleanup: ignore deletion errors and propagate panics properly

Replace assert-based cleanup with ignored deletion results and
explicit panic propagation via resume_unwind. This ensures that
cleanup failures don't mask test results, and panicked tests properly
unwind through the cleanup code.

Signed-off-by: Gris Ge <cnfourt@gmail.com>

Author: cathay4t

src/ip/link/tests/bond.rs

@@ -82,7 +82,10 @@ where
     });
 
     // clean up
-    exec_cmd(&["ip", "link", "del", dummy_name]);
-    exec_cmd(&["ip", "link", "del", bond_name]);
-    assert!(result.is_ok())
+    let _ = exec_cmd(&["ip", "link", "del", dummy_name]);
+    let _ = exec_cmd(&["ip", "link", "del", bond_name]);
+
+    if let Err(e) = result {
+        std::panic::resume_unwind(e);
+    }
 }

src/ip/link/tests/bridge.rs

@@ -196,7 +196,10 @@ where
     });
 
     // clean up
-    exec_cmd(&["ip", "link", "del", dummy_name]);
-    exec_cmd(&["ip", "link", "del", br_name]);
-    assert!(result.is_ok())
+    let _ = exec_cmd(&["ip", "link", "del", dummy_name]);
+    let _ = exec_cmd(&["ip", "link", "del", br_name]);
+
+    if let Err(e) = result {
+        std::panic::resume_unwind(e);
+    }
 }

src/ip/link/tests/dummy.rs

@@ -75,6 +75,9 @@ where
     });
 
     // clean up
-    exec_cmd(&["ip", "link", "del", name]);
-    assert!(result.is_ok())
+    let _ = exec_cmd(&["ip", "link", "del", name]);
+
+    if let Err(e) = result {
+        std::panic::resume_unwind(e);
+    }
 }

src/ip/link/tests/nlmon.rs

@@ -67,6 +67,9 @@ where
     });
 
     // clean up
-    exec_cmd(&["ip", "link", "del", name]);
-    assert!(result.is_ok())
+    let _ = exec_cmd(&["ip", "link", "del", name]);
+
+    if let Err(e) = result {
+        std::panic::resume_unwind(e);
+    }
 }

src/ip/link/tests/vlan.rs

@@ -281,7 +281,10 @@ where
     });
 
     // clean up
-    exec_cmd(&["ip", "link", "del", vlan_name]);
-    exec_cmd(&["ip", "link", "del", &parent_name]);
-    assert!(result.is_ok())
+    let _ = exec_cmd(&["ip", "link", "del", vlan_name]);
+    let _ = exec_cmd(&["ip", "link", "del", &parent_name]);
+
+    if let Err(e) = result {
+        std::panic::resume_unwind(e);
+    }
 }

src/ip/link/tests/vxlan.rs

@@ -66,6 +66,9 @@ where
     });
 
     // clean up
-    exec_cmd(&["ip", "link", "del", vxlan_name]);
-    assert!(result.is_ok())
+    let _ = exec_cmd(&["ip", "link", "del", vxlan_name]);
+
+    if let Err(e) = result {
+        std::panic::resume_unwind(e);
+    }
 }