Return empty list from bulk get API.
Return empty list from bulk get API.

while reading the db with dbe_read_multi() if the uuid is deleted in between,
api return NoIdError for list request. NoIdError for list is improper and it should
return empty list
Also note, if the uuid to read request is invalid or non existing, API returns empty
list
Fix is to return Empty List from such read request
Closes-Bug: 1433983

Change-Id: I88956f395aa5085f1f215b85c6dd5d5ec46a6fba

varunarya10/contrail-generateDS,varunarya10/contrail-generateDS,JioCloud/contrail-generateDS,JioCloud/contrail-generateDS,vpramo/contrail-generateDS,varunarya10/contrail-generateDS,vpramo/contrail-generateDS,JioCloud/contrail-generateDS,vpramo/contrail-generateDS,vpramo/contrail-generateDS,varunarya10/contrail-generateDS,varunarya10/contrail-generateDS,JioCloud/contrail-generateDS,vpramo/contrail-generateDS,JioCloud/contrail-generateDS