IBX-3740: Fixed resolving ELASTICSEARCH_DSN variable for Platform.sh

[konradoboza]

JIRA: https://issues.ibexa.co/browse/IBX-3740

For quite some time, Platform.sh relies on ELASTICSEARCH_URL env variable, ref:
https://github.com/platformsh/symfonyflex-bridge/blob/b30d3309a02f770e5aec8db06ce59972253a9d0a/platformsh-flex-env.php#L306. Added fallbacking from ELASTICSEARCH_DSN to ELASTICSEARCH_URL seems to do the trick and saves developers from necessity to set any additional env variables on their Platform.sh instances.

Note:
Performing:

1. bin/console ibexa:elasticsearch:put-index-template --overwrite
2. curl -X DELETE 'http://elasticsearch.internal:9200/_all'
3. bin/console ibexa:reindex

once, might be necessary for the new configuration to be picked up.

[github-actions]

Thanks for contribution! 🎉

To test the changes please execute:

composer config extra.symfony.endpoint https://api.github.com/repos/ibexa/recipes-dev/contents/index.json?ref=flex/pull-112

before executing the recipes.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[micszo]

Tested with Elastic on platform.sh. ES setup works fine now.

QA Approved on Ibexa Commerce 4.5.7-dev.