Fix TLS connection to sites which require better key exchange. BUGZ-4134 (!1641) · Merge requests · nordugrid / arc · GitLab

nordugrid-arc-bot requested to merge cherryMR1640master-best_tls13_key_exchange_curve into master Oct 13, 2023

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This merge request is automatically cherrypicked from !1640 (merged) from source branch https://source.coderefinery.org/aleksandr.konstantinov/arc/-/tree/best_tls13_key_exchange_curve orginally made by @aleksandr.konstantinov .
The original MR went to branch: https://source.coderefinery.org/nordugrid/arc/-/tree/next
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Let OpenSSL choose key excahnge curve - should be best supported. Also remove support for SSL2 and SSL3 protocols.