Allow payment reuse for same app LRN (#961)

Part of [Service provider auctions for web deployments](https://www.notion.so/Service-provider-auctions-for-web-deployments-104a6b22d47280dbad51d28aa3a91d75)

Reviewed-on: #961
Reviewed-by: ashwin <ashwin@noreply.git.vdb.to>
Co-authored-by: Prathamesh Musale <prathamesh.musale0@gmail.com>
Co-committed-by: Prathamesh Musale <prathamesh.musale0@gmail.com>

stack_orchestrator/deploy/webapp/util.py

@@ -851,9 +851,11 @@ def confirm_payment(laconic: LaconicRegistryClient, record, payment_address, min
         {"deployer": record.attributes.deployer, "payment": tx.hash}, all=True
     )
     if len(used):
+        # Fetch the app name from request record
+        used_request = laconic.get_record(used[0].attributes.request, require=True)
+
         # Check that payment was used for deployment of same application
-        app_record = laconic.get_record(record.attributes.application, require=True)
-        if app_record.id != used[0].attributes.application:
+        if record.attributes.application != used_request.attributes.application:
             logger.log(f"{record.id}: payment {tx.hash} already used on a different application deployment {used}")
             return False