Address breaking changes introduced in SolrJ 10

[mvolikas]

What would you like to be improved?

Address Major Changes in Solr 10.

How should we improve?

No response

[dpol1]

Hi @mvolikas, I can take this one. I already completed the Solr 10 migration locally and the full test suite is green.

Quick summary:

• Deps: bumped solr-solrj to 10.0.0 and explicitly added solr-solrj-jetty and solr-solrj-zookeeper

• Clients/imports: replaced deprecated HTTP clients with Jetty-based ones (HttpJettySolrClient, etc.) and fixed relocated imports (org.apache.solr.client.solrj.request.SolrQuery)

• URL handling: updated SolrConnection to derive root URL + collection from existing config values, preserving backward compatibility

• Infra/tests: bumped Docker image to solr:10.0.0, migrated CLI flags to the new -- format (e.g. --zk-host), and updated to 10.0.0

If you agree with that changes I’ll open the PR right away. Unless we need to discuss this on the dev@ list first

[mvolikas]

Hi @dpol1,
Thanks for looking into this!
Feel free to open the PR whenever you're ready.