prometheus: add newline at the end of targets JSON

roles/prometheus/tasks/main.yml

@@ -66,21 +66,21 @@
 # We don't need to restart Prometheus when updating nodes
 - name: Configure Prometheus nodes
   copy:
-    content: "{{ prometheus_targets | to_nice_json }}"
+    content: "{{ prometheus_targets | to_nice_json }}\n"
     dest: /etc/prometheus/targets.json
     mode: 0644
 
 # We don't need to restart Prometheus when updating nodes
 - name: Configure Prometheus Ubiquity Unifi SNMP devices
   copy:
-    content: "{{ prometheus_unifi_snmp_targets | to_nice_json }}"
+    content: "{{ prometheus_unifi_snmp_targets | to_nice_json }}\n"
     dest: /etc/prometheus/targets_unifi_snmp.json
     mode: 0644
   when: prometheus_unifi_snmp_targets is defined
 
 - name: Configure Prometheus Switchs
   copy:
-    content: "{{ prometheus_switch_snmp_targets | to_nice_json }}"
+    content: "{{ prometheus_switch_snmp_targets | to_nice_json }}\n"
     dest: /etc/prometheus/targets_switch_snmp.json
     mode: 0644
   when: prometheus_switch_snmp_targets is defined