Fix file permission

Signed-off-by: Julian-Samuel Gebühr <julian-samuel@gebuehr.net>

roles/matrix-cactus-comments/tasks/setup_install.yml

@@ -82,7 +82,7 @@
         src: "/tmp/cactus-comments-{{ matrix_cactus_comments_client_version }}.tar.gz"
         dest: "/tmp/"
         remote_src: true
-        mode: 600
+        mode: 0600
       check_mode: false
 
     - name: Propagate client javascript file