Avoid redundant Restart: systemd override for container services

The directive is already part of the container systemd template and it
is unnecessary to 'fix' it.

roles/float-base/tasks/systemd.yml

@@ -3,7 +3,7 @@
 # Find the systemd units matching locally running services, and ensure
 # that they are set to always restart.
 - set_fact:
-    local_systemd_units: "{{ float_enabled_services | map('extract', services) | rejectattr('systemd_services', 'undefined') | map(attribute='systemd_services') | flatten }}"
+    local_systemd_units: "{{ float_enabled_services | map('extract', services) | rejectattr('systemd_services', 'undefined') | map(attribute='systemd_services') | flatten | reject('search', '^docker-') }}"
 - name: Fix systemd services to autorestart
   include_role:
     name: float-util-systemd-custom-snippet