Merge branch 'rsyslog' into 'newinfra'

[rsyslog-client] install relp module

See merge request !170

roles/rsyslog-client/tasks/main.yml

 ---
+- name: Install common tools
+  apt:
+    update_cache: true
+    install_recommends: false
+    name:
+      - rsyslog-relp
+  register: apt_result
+  retries: 3
+  until: apt_result is succeeded
+
 - name: Deploy rsyslog config
   template:
     src: rsyslog.d/50-send_relp.conf.j2