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-c.yaml b/jjb/global-templates-c.yaml
index f78cce7..ac841a5 100644
--- a/jjb/global-templates-c.yaml
+++ b/jjb/global-templates-c.yaml
@@ -3,7 +3,7 @@
 # COMMON FUNCTIONS #
 ####################
 
-- c_job_common: &c_job_common
+- _c_job_common: &c_job_common
     name: c-job-common
 
     ######################