caddy-frontend: Transmit slave reference for rejection report

It's much easier to find the slave by it's reference than by it's title for
the cluster administrator, so use the reference in this case.

Fixes "caddy-frontend: Add promise for rejected slaves", even if title seemed
more human readable, but it's unusable.

software/caddy-frontend/buildout.hash.cfg

@@ -26,7 +26,7 @@ md5sum = e8db3179e3278c6390a786cdcc947173
 
 [profile-caddy-replicate]
 filename = instance-apache-replicate.cfg.in
-md5sum = ef2b4b9cd593aae473aa453fb48397fd
+md5sum = 2329022227099971a57f710832509153
 
 [profile-slave-list]
 _update_hash_filename_ = templates/apache-custom-slave-list.cfg.in

software/caddy-frontend/instance-apache-replicate.cfg.in

@@ -111,7 +111,6 @@ context =
 {% set authorized_slave_string_list = [] %}
 {% set authorized_slave_list = [] %}
 {% set rejected_slave_dict = {} %}
-{% set rejected_slave_title_dict = {} %}
 {% set warning_slave_dict = {} %}
 {% set used_host_list = [] %}
 {% for slave in sorted(instance_parameter_dict['slave-instance-list']) %}
@@ -247,7 +246,6 @@ context =
 {%     do authorized_slave_list.append(authorized_slave) %}
 {%   else %}
 {%     do rejected_slave_dict.__setitem__(slave.get('slave_reference'), sorted(slave_error_list)) %}
-{%     do rejected_slave_title_dict.__setitem__(slave.get('slave_title'), sorted(slave_error_list)) %}
 {%   endif %}
 {%   if len(slave_warning_list) > 0 %}
 {%     do warning_slave_dict.__setitem__(slave.get('slave_reference'), sorted(slave_warning_list)) %}
@@ -326,7 +324,7 @@ accepted-slave-amount = {{ authorized_slave_list | length }}
 rejected-slave-amount = {{ rejected_slave_dict | length }}
 backend-client-caucase-url = {{ caucase_url }}
 {# sort_keys are important in order to avoid shuffling parameters on each run #}
-rejected-slave-dict = {{ dumps(json_module.dumps(rejected_slave_title_dict, sort_keys=True)) }}
+rejected-slave-dict = {{ dumps(json_module.dumps(rejected_slave_dict, sort_keys=True)) }}
 rejected-slave-promise-url = ${rejected-slave-promise:config-url}
 master-key-upload-url = ${request-kedifa:connection-master-key-upload-url}
 master-key-generate-auth-url = ${request-kedifa:connection-master-key-generate-auth-url}
@@ -749,9 +747,9 @@ filename = rejected-slave.json
 directory = ${directory:promise-output}
 rendered = ${:directory}/${:filename}
 template = {{ software_parameter_dict['template_empty'] }}
-{% if rejected_slave_title_dict %}
+{% if rejected_slave_dict %}
 {# sort_keys are important in order to avoid shuffling parameters on each run #}
-content = {{ dumps(json_module.dumps(rejected_slave_title_dict, indent=2, sort_keys=True)) }}
+content = {{ dumps(json_module.dumps(rejected_slave_dict, indent=2, sort_keys=True)) }}
 {% else %}
 content =
 {% endif %}