client: store validator protocol key in the regular wallet

apps/src/lib/client/tx.rs

@@ -365,6 +365,7 @@ pub async fn submit_init_validator<'a>(
 
     let validator_key_alias = format!("{}-key", alias);
     let consensus_key_alias = format!("{}-consensus-key", alias);
+    let protocol_key_alias = format!("{}-protocol-key", alias);
 
     let threshold = match threshold {
         Some(threshold) => threshold,
@@ -479,7 +480,25 @@ pub async fn submit_init_validator<'a>(
         scheme,
     )
     .unwrap();
-    let protocol_key = validator_keys.get_protocol_keypair().to_public();
+    let protocol_sk = validator_keys.get_protocol_keypair();
+    let protocol_key = protocol_sk.to_public();
+
+    // Store the protocol key in the wallet so that we can sign the tx with it
+    // to verify ownership
+    display_line!(namada.io(), "Storing protocol key in the wallet...");
+    let password = read_and_confirm_encryption_password(unsafe_dont_encrypt);
+    namada
+        .wallet_mut()
+        .await
+        .insert_keypair(
+            protocol_key_alias,
+            tx_args.wallet_alias_force,
+            protocol_sk.clone(),
+            password,
+            None,
+            None,
+        )
+        .map_err(|err| error::Error::Other(err.to_string()))?;
 
     let validator_vp_code_hash =
         query_wasm_code_hash(namada, validator_vp_code_path.to_str().unwrap())