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/it-dev/it-dev.yaml b/jjb/it-dev/it-dev.yaml
index 4dcbb96..d69f960 100644
--- a/jjb/it-dev/it-dev.yaml
+++ b/jjb/it-dev/it-dev.yaml
@@ -13,7 +13,7 @@
     jobs:
       - gerrit-info-yaml-verify
 
-- it_dev_xo_common: &it_dev_xo_common
+- _it_dev_xo_common: &it_dev_xo_common
     name: it-dev-xo-common
     # git repo
     project: it/dev
@@ -22,7 +22,7 @@
     # maven settings file has docker credentials
     mvn-settings: it-dev-settings
 
-- it_dev_xo_py_common: &it_dev_xo_py_common
+- _it_dev_xo_py_common: &it_dev_xo_py_common
     name: it-dev-xo-py-common
     python-version: python3.6
     tox-dir: xapp_onboarder