Refactor!: JJB code comply with updates to v5.x

Update global-jjb v0.86.0, this updates the minimal
version of JJB to v5.0.2.

Issue-ID: CIMAN-33
Change-Id: I26089604b401a8b486d752a4780b1981788d19ad
Signed-off-by: Anil Belur <abelur@linuxfoundation.org>
diff --git a/jjb/global-templates-helm.yaml b/jjb/global-templates-helm.yaml
index 7b74b0e..98a67b8 100644
--- a/jjb/global-templates-helm.yaml
+++ b/jjb/global-templates-helm.yaml
@@ -20,7 +20,7 @@
 ###########
 # ANCHORS #
 ###########
-- helm_job_boiler_plate: &helm_job_boiler_plate
+- _helm_job_boiler_plate: &helm_job_boiler_plate
     name: helm_job_boiler_plate
 
     ######################