message: Fix agent and ledger demo scenarious for protocolVersion.
diff: @@ -243,6 +243,7 @@ fn agent_demo_works() {
  "verkey": listener_vk,
  "type": "1",
  },
  + "protocolVersion": 1,
  "reqId": nym_req_id,
  });
  @@ -271,6 +272,7 @@ fn agent_demo_works() {
  "raw": format!("{{\"endpoint\":{{\"ha\":\"{}\", \"verkey\":\"{}\"}}}}", endpoint, listener_pk),
  "type": "100",
  },
  + "protocolVersion": 1,
  "reqId": req_id
  });
  let listener_attrib_json = serde_json::to_string(&listener_attrib_json).unwrap();
  @@ -766,6 +768,7 @@ fn ledger_demo_works() {
  dest: my_did.clone(),
  type_: "1".to_string(),
  },
  + protocolVersion: 1,
  req_id: nym_req_id,
  signature: None,
  };
  @@ -797,6 +800,7 @@ fn ledger_demo_works() {
  type_: "105".to_string(),
  dest: my_did.clone(),
  },
  + protocolVersion: 1,
  };
  let request = serde_json::to_string(&get_nym_txn).unwrap();
  @@ -822,6 +826,7 @@ fn ledger_demo_works() {
  req_id: u64,
  identifier: String,
  operation: Operation,
  + protocolVersion: u64,
  #[serde(skip_serializing_if = "Option::is_none")]
  signature: Option<String>,
  }
  