[SDPA-2005] Refactored ES Connector service alts.

[GROwen]

Alters the ES Connector Index Factory service to append the hash to index name.

Project implementation: dpc-sdp/content-vic-gov-au#544

[anthony-malkoun]

Hey @GROwen I'm confused what this is doing. Is there meant to be more to this change?

[anthony-malkoun]

As discussed, if this loads in the correct methods then it is the correct way to do it. Please add the links to the relevant blog posts for my information, but Approved.

[GROwen]

As discussed, if this loads in the correct methods then it is the correct way to do it. Please add the links to the relevant blog posts for my information, but Approved.

How to override a Drupal 8 service
https://www.previousnext.com.au/blog/overriding-services-drupal-8-advanced-cases
That article provides two options based on requirements.
Firstly Tim Milwood's static example which works when you don’t need to change arguments or conditionally add the alter or do anything dynamically
The PN article progresses into a more detailed example of the replacement of a service.