Dates should be given in timestamp if dateformat is not specified

[MohamedHamouGisaia]

• In our documentation we demand that dates should be given in milliseconds for the queries ( lte, gte, range, eq, neq) if the dateformat query parameter is not specified.

• In our current implementation. If :

  • a date field is indexed as date
  • in a format different from 'epoch_millis'
  • and not specified as the timestamp path of a collection

then when we apply a _search request with the mentioned-date-field and with milliseconds, an error 400 is thrown. => we do not respect the documentation.