Do not log content of copied static files

``haproxy_static_files`` can be used to copy static files to target
hosts. These files may contain sensitive content that should not be
logged.

This patch disables logging for this task.

Change-Id: I8f1c01385d7aca8f17cc3f49aafcf2b7269fa554

tasks/haproxy_pre_install.yml

@@ -64,3 +64,4 @@
   when:
     - (item.condition | default(True))
   loop: "{{ haproxy_static_files }}"
+  no_log: True