Merge "Add Ubuntu 18.04 docker 4c-4g system"

diff --git a/global-jjb b/global-jjb
index 762400ee2c77d0cb936ca1757bc2ac1515042436..0c66e6ab1d80770ca7060237b436190f9fa274a0 160000 (submodule)
--- a/global-jjb
+++ b/global-jjb
@@ -1 +1 @@
-Subproject commit 762400ee2c77d0cb936ca1757bc2ac1515042436
+Subproject commit 0c66e6ab1d80770ca7060237b436190f9fa274a0