Merge branch 'add-pod-restart-status-code' into 'dev'

Add a dedicated status code for plugin key decryption error

See merge request !281

src/error.rs

@@ -19,7 +19,7 @@ impl From<chacha20poly1305::aead::Error> for Error {
     fn from(err: chacha20poly1305::aead::Error) -> Error {
         let msg = format!("Error in symmetric encryption cypher, {}", err);
         Error {
-            code: StatusCode::INTERNAL_SERVER_ERROR,
+            code: StatusCode::MISDIRECTED_REQUEST,
             msg,
         }
     }