e2e: prevent non-viable testnets (#6486)

test/e2e/generator/generate.go

@@ -303,6 +303,10 @@ func generateNode(
 		}
 	}
 
+	if node.StateSync {
+		node.FastSync = "v0"
+	}
+
 	return &node
 }
 

test/e2e/runner/main.go

@@ -97,7 +97,7 @@ func NewCLI() *CLI {
 			if err := <-chLoadResult; err != nil {
 				return err
 			}
-			if err := Wait(cli.testnet, 5); err != nil { // wait for network to settle before tests
+			if err := Wait(cli.testnet, 8); err != nil { // wait for network to settle before tests
 				return err
 			}
 			if err := Test(cli.testnet); err != nil {