Report low, medium, high bandit issues

This patch changes minimal reported severity to low.

Change-Id: Ib2ca063c3356885470494c0cbac5c9f0fef48c1f
Related-Prod: https://mirantis.jira.com/browse/PROD-16898
diff --git a/jenkins/client/job/oscore/security_tests.yml b/jenkins/client/job/oscore/security_tests.yml
index e4f5f6d..36b5441 100644
--- a/jenkins/client/job/oscore/security_tests.yml
+++ b/jenkins/client/job/oscore/security_tests.yml
@@ -62,7 +62,7 @@
               SEVERITY:
                 type: string
                 description: Bandit args
-                default: "3"
+                default: "1"
               CONFIDENCE:
                 type: string
                 description: confidence