algorand: fix trivial exit in tests when local indexer is broken

The test previously exited successfully when the local indexer was broken, allowing CI to pass
while skipping the remaining test cases. Exit with an error so incomplete test runs are reported as failures.

Author: johnsaigle

algorand/test/test.py

@@ -113,7 +113,7 @@ def getVAA(self, client, sender, sid, app):
 
         if (self.INDEXER_ROUND > 512 and not self.args.testnet):  # until they fix it
             print("indexer is broken in local net... stop/clean/restart the sandbox")
-            sys.exit(0)
+            sys.exit(1)
 
         txns = []