added task for importing gpg key

roles/jitsimeet/tasks/main.yml

@@ -5,20 +5,28 @@
 - block:
   - debug:
       msg: Debug
+
   # import role webserver
   - import_role:
       name: webserver # required. The name of the role to be executed.
+
   # install software
   - name: jitsimeet | adjust limits
     blockinfile:
-      path: "/etc/systemd/system.conf" # required. The file to modify. Before Ansible 2.3 this option was only usable as I(dest), I(destfile) and I(name).
+      path: "/etc/systemd/system.conf"
-      block: |  # not required. The text to insert inside the marker lines. If it is missing or an empty string, the block will be removed as if C(state) were specified to C(absent).
+      block: |
         DefaultLimitNOFILE=65000
         DefaultLimitNPROC=65000
         DefaultTasksMax=65000
+
   - name: jitsimeet | reload systemd
     systemd:
-      daemon_reload: true # not required. Run daemon-reload before doing any other operations, to make sure systemd has read any changes. When set to C(yes), runs daemon-reload even if the module does not start or stop anything.
+      daemon_reload: true
+
+  - name: jitsimeet | import GPG key
+    apt_key:
+      url: "https://download.jitsi.org/jitsi-key.gpg.key"
+      state: present # not required. choices: absent;present. Ensures that the key is present (added) or absent (revoked).
 
   rescue:
     - set_fact: task_failed=true