[test-server-utils] Correct when open of deprecated book/calendar is retried

The test could fail when creating the instance, not when opening it,
thus retry also when the instance creation fails. Left the code
for the open() too, just in case.

tests/test-server-utils/e-test-server-utils.c

@@ -446,8 +446,15 @@ e_test_server_utils_source_added (ESourceRegistry *registry,
 
 		/* Dont bother testing the Async apis for deprecated APIs */
 		pair->fixture->service.book = e_book_new (source, &error);
-		if (!pair->fixture->service.book)
-			g_error ("Unable to create the test book: %s", error->message);
+		if (!pair->fixture->service.book) {
+			if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND) &&
+			    pair->retries < 3)
+				need_retry = TRUE;
+			else
+				g_error ("Unable to create the test book: %s", error->message);
+
+			break;
+		}
 
 		if (!e_book_open (pair->fixture->service.book, FALSE, &error)) {
 			if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND) &&
@@ -487,8 +494,14 @@ e_test_server_utils_source_added (ESourceRegistry *registry,
 
 		/* Dont bother testing the Async apis for deprecated APIs */
 		pair->fixture->service.calendar = e_cal_new (source, pair->closure->calendar_source_type);
-		if (!pair->fixture->service.calendar)
-			g_error ("Unable to create the test calendar");
+		if (!pair->fixture->service.calendar) {
+			if (pair->retries < 3)
+				need_retry = TRUE;
+			else
+				g_error ("Unable to create the test calendar");
+
+			break;
+		}
 
 		if (!e_cal_open (pair->fixture->service.calendar, FALSE, &error)) {
 			if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND) &&