CMS: update the script to build the trigger config file listing

[katilp]

The config file extracted in #67 are made available through listing such as

A script has been used the generate the page for 2011 trigger config file listing in https://github.com/cernopendata/data-curation/blob/master/cms-2011-hlt-triggers/code/create_hlt_trigger_information_records.py but NB that it may need to modified due the changes in the underlying data model of the portal.

Write a new script to put together pages for Run2 data taking (2015-2018).