chore(a3p): setup oracle and push price at use phase

rel: Agoric/BytePitchPartnerEng#26

a3p-integration/proposals/n:upgrade-next/use.sh

@@ -5,3 +5,6 @@ set -uxeo pipefail
 
 node ./addGov4
 ./acceptInvites.js
+
+./verifyPushedPrice.js 'ATOM' 12.01
+./verifyPushedPrice.js 'stATOM' 12.01

a3p-integration/proposals/n:upgrade-next/verifyPushedPrice.js

@@ -0,0 +1,21 @@
+#!/usr/bin/env node
+
+import {
+  registerOraclesForBrand,
+  generateOracleMap,
+} from '@agoric/synthetic-chain';
+import { argv } from 'node:process';
+import { verifyPushedPrice } from './test-lib/price-feed.js';
+
+const brand = argv[2];
+const price = Number(argv[3]);
+
+const BASE_ID = 'n-upgrade';
+const ROUND_ID = 1;
+
+const oraclesByBrand = generateOracleMap(BASE_ID, [brand]);
+await registerOraclesForBrand(brand, oraclesByBrand);
+console.log(`Registering Oracle for ${brand}`);
+
+await verifyPushedPrice(price, brand, oraclesByBrand, ROUND_ID);
+console.log(`Price pushed for ${brand}`);