Store required entity fields for Billing reports

[mzueva]

trafficstars

Background At the moment when data is persisted for billing reports only entity id (tool/pipeline/storage) is saved and details are fetched from the database when billing report is generated. With such approach we cannot provide details (name , owner) for deleted entities in the billing reports.

Approach

1. All entities details which are used in billing reports shall be persisted in Elasticsearch during data synchronisation.
2. When billing report is generated deleted flag shall be returned along with entity details.