/reviewed-on !172

resilient: adds a promise to test integrity and the status of the last run of the feeds generated by notifier scripts

resilient: improve feed monitoring to provide feed access directly in monitor

Resilient stack: define different ssh/httpd ports from pbs, import and export. Allow to have import/export using same IP.

So we remove the trailing /.

This is a squash merge of 'resiliency-testing' branch when
the HEAD of this branch was f725c81d7d69.

The merge was done by Antoine Catton.