Bug 26903: [20.05.x] Pass record ids and records through to update_index when passed...

Bug 26903: [20.05.x] Pass record ids and records through to update_index when passed to index_records

When both a record and record_id are passed to index_records the data should be passed through
to update_index. We missed copying over the record ids to the variable we use as a check.

To test:
1 - Set searchEngine system preference to Elasticsearch
2 - Reindex your db
3 - Search authorities
4 - Edit a record and add 'testwaffle' to the main heading
5 - Search authorities for 'testwaffle' - no results
6 - Apply patch
7 - Edit the record again, change 'testwaffle' to 'testpancake'
8 - Search authorities for 'testpancake' - result!
9 - Confirm imported authorities and authorities added via Z39 are correctly indexed

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Bug 26903: Unit tests

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>