set keylength to 256 to match production

Author: baszoetekouw

roles/haproxy/tasks/get_acme_certs.yml

@@ -31,7 +31,7 @@
           /home/acme/.acme.sh/acme.sh
             --issue
             --ecc
-            --keylength ec-384
+            --keylength ec-256
             --days "{{ haproxy_acme_renewal_days }}"
             --dns dns_acmedns
             --stateless