Fixing RO Security Vulnerabilities

Jinja2 sets autoescape to False, disabling SSL certificate checks, use of unsafe yaml load,
Try-Except-Pass detected, use of assert detected.
Removing openmanoconfig.py.

Change-Id: I3353208e150ae6c2f91befa1a3bbed33ed0c528d
Signed-off-by: aticig <gulsum.atici@canonical.com>
diff --git a/tox.ini b/tox.ini
index 970706a..a7aba66 100644
--- a/tox.ini
+++ b/tox.ini
@@ -450,7 +450,8 @@
         E125,
         E203,
         E226,
-        E241
+        E241,
+        E501,
 exclude =
         .git,
         __pycache__,