"""
Get complete information on an item
:param session: contains the used login username and working project
:param topic: it can be: users, projects, vnfds, nsds,
:param _id: server id of the item
"""
Get complete information on an item
:param session: contains the used login username and working project
:param topic: it can be: users, projects, vnfds, nsds,
:param _id: server id of the item