patch 8.2.3061: testing the shell option is incomplete and spread out

Problem:    Testing the shell option is incomplete and spread out.
Solution:   Move shell tests to one file and increase coverage. (Yegappan
            Lakshmanan, closes #8464)
diff --git a/src/version.c b/src/version.c
index 069d8ab..f4f5df3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3061,
+/**/
     3060,
 /**/
     3059,