Revert "Upgrade global-jjb v0.79.4"

This reverts commit 1640282edd7a1dfbe5050602f516afa7febeae01.
Revert back to v0.79.3, we need to make sure the nodes
are updated first with the latest Python versions.

Issue-ID: CIMAN-33
Change-Id: I5bc13756a0bcf80aceee345fd7367291a31b9312
diff --git a/global-jjb b/global-jjb
index 53a8bdf..a09b8ba 160000
--- a/global-jjb
+++ b/global-jjb
@@ -1 +1 @@
-Subproject commit 53a8bdfd0f05f7d29ac34a44496efb2ed081250f
+Subproject commit a09b8bab2c37f67f0f5e9ef36f9e93b330fdd571