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

@@ -846,16 +846,21 @@ def confirm_payment(laconic: LaconicRegistryClient, record, payment_address, min
         )
         return False
 
-    # Check if the payment was already used on a
+    # Check if the payment was already used on a deployment
     used = laconic.app_deployments(
-        {"deployer": payment_address, "payment": tx.hash}, all=True
+        {"deployer": record.attributes.deployer, "payment": tx.hash}, all=True
     )
     if len(used):
-        logger.log(f"{record.id}: payment {tx.hash} already used on deployment {used}")
-        return False
+        # 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
+        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
 
     used = laconic.app_deployment_removals(
-        {"deployer": payment_address, "payment": tx.hash}, all=True
+        {"deployer": record.attributes.deployer, "payment": tx.hash}, all=True
     )
     if len(used):
         logger.log(