genpolicy: add default implementation for get_annotations

- Provide default implementation for get_annontations.
- Remove default implementation from structs implementing the trait K8sResource

Fixes: #8960
Signed-off-by: Archana Choudhary <archana1@microsoft.com>

src/tools/genpolicy/src/list.rs

@@ -18,7 +18,6 @@ use protocols::agent;
 use serde::{Deserialize, Serialize};
 use serde_yaml::Value;
 use std::boxed;
-use std::collections::BTreeMap;
 use std::marker::{Send, Sync};
 
 #[derive(Debug, Serialize, Deserialize)]
@@ -90,10 +89,6 @@ impl yaml::K8sResource for List {
         panic!("Unsupported");
     }
 
-    fn get_annotations(&self) -> &Option<BTreeMap<String, String>> {
-        panic!("Unsupported");
-    }
-
     fn use_host_network(&self) -> bool {
         panic!("Unsupported");
     }

src/tools/genpolicy/src/no_policy.rs

@@ -14,7 +14,6 @@ use crate::yaml;
 
 use async_trait::async_trait;
 use protocols::agent;
-use std::collections::BTreeMap;
 
 #[derive(Clone, Debug)]
 pub struct NoPolicyResource {
@@ -57,10 +56,6 @@ impl yaml::K8sResource for NoPolicyResource {
         panic!("Unsupported");
     }
 
-    fn get_annotations(&self) -> &Option<BTreeMap<String, String>> {
-        panic!("Unsupported");
-    }
-
     fn use_host_network(&self) -> bool {
         panic!("Unsupported");
     }

src/tools/genpolicy/src/secret.rs

@@ -104,10 +104,6 @@ impl yaml::K8sResource for Secret {
         panic!("Unsupported");
     }
 
-    fn get_annotations(&self) -> &Option<BTreeMap<String, String>> {
-        panic!("Unsupported");
-    }
-
     fn use_host_network(&self) -> bool {
         panic!("Unsupported");
     }

src/tools/genpolicy/src/yaml.rs

@@ -66,7 +66,10 @@ pub trait K8sResource {
     );
 
     fn get_containers(&self) -> &Vec<pod::Container>;
-    fn get_annotations(&self) -> &Option<BTreeMap<String, String>>;
+    fn get_annotations(&self) -> &Option<BTreeMap<String, String>> {
+        panic!("Unsupported");
+    }
+
     fn use_host_network(&self) -> bool;
     fn use_sandbox_pidns(&self) -> bool;
 }