patch 8.1.1285: test17 is old style

Problem:    Test17 is old style.
Solution:   Turn into new style test. (Yegappan Lakshmanan, closes #4347)
diff --git a/src/version.c b/src/version.c
index bb310e2..f4344aa 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1285,
+/**/
     1284,
 /**/
     1283,