stack/resilient: set a default retention-delay

stack/resilient/buildout.hash.cfg

@@ -30,7 +30,7 @@ md5sum = 1b8645835f04081861266436505fd28f
 
 [template-replicated]
 filename = template-replicated.cfg.in
-md5sum = 67c863b15dbfa937babdbd620f95c1ff
+md5sum = 4a58c927aeb7a04861a1d9feab446e38
 
 [template-parts]
 filename = template-parts.cfg.in

stack/resilient/template-replicated.cfg.in

@@ -221,6 +221,9 @@ sla-mode = unique_by_network
 sla-{{ key }} = {{ value }}
 {%   endfor %}
 {% endif %}
+{% if 'retention-delay' not in sla_dict %}
+sla-retention_delay = 7
+{% endif %}
 
 [resilient-request-pbs-{{namebase}}-{{id}}-public-key-promise-bin]
 # Check that public-key-value parameter exists and is not empty