fix: updating retention to 30d (#1399)

ansible/roles/process-exporter-prometheus/defaults/main.yml

 process_exporter_prometheus_reservation_memory: 1G
 process_exporter_prometheus_limit_memory: 1G
-process_exporter_prometheus_storage_retention_time: 90d
+process_exporter_prometheus_storage_retention_time: 30d
 
 process_exporter_prometheus_stack_files: /opt/docker/stacks/process_exporter_prometheus/stack
 process_exporter_prometheus_config_files: /opt/docker/stacks/process_exporter_prometheus/config

ansible/roles/process-exporter-prometheus/templates/process_exporter_prometheus_stack.yml

@@ -9,7 +9,7 @@ services:
             - application_default
         volumes:
             - "{{ process_exporter_prometheus_mount_point }}:/prometheus"
-        command: "--config.file=/etc/prometheus/prometheus.yml --storage.tsdb.path=/prometheus --web.console.libraries=/etc/prometheus/console_libraries  --storage.tsdb.retention.time={{prometheus_storage_retention_time}} --web.console.templates=/etc/prometheus/consoles --web.route-prefix={{process_exporter_prometheus_route_prefix}} --web.external-url={{process_exporter_prometheus_web_external_url}} --web.enable-admin-api"
+        command: "--config.file=/etc/prometheus/prometheus.yml --storage.tsdb.path=/prometheus --web.console.libraries=/etc/prometheus/console_libraries  --storage.tsdb.retention.time={{process_exporter_prometheus_storage_retention_time}} --web.console.templates=/etc/prometheus/consoles --web.route-prefix={{process_exporter_prometheus_route_prefix}} --web.external-url={{process_exporter_prometheus_web_external_url}} --web.enable-admin-api"
         configs:
             - source: process_exporter_prometheus.yml
               target: /etc/prometheus/prometheus.yml