Refactor!: Update JJB code to comply with 5.x

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

Signed-off-by: Anil Belur <abelur@linuxfoundation.org>
Change-Id: I8866f96f34acc38df025225d03f2acf8fc314d4d
diff --git a/jjb/ric-plt-e2/ric-plt-e2.yaml b/jjb/ric-plt-e2/ric-plt-e2.yaml
index a7fdb80..fce7565 100644
--- a/jjb/ric-plt-e2/ric-plt-e2.yaml
+++ b/jjb/ric-plt-e2/ric-plt-e2.yaml
@@ -13,7 +13,7 @@
     jobs:
       - gerrit-info-yaml-verify
 
-- e2_docker_common: &e2_docker_common
+- _e2_docker_common: &e2_docker_common
     # values apply to all E2 docker projects
     name: e2-docker-common
     # git repo