Add miniflux deployment

Contains default credentials but these should be overwritten with
group or host -destined variables.

Add default credentials

Hide real credential files from git

roles/miniflux/meta/main.yml

@@ -0,0 +1,14 @@
+---
+
+galaxy_info:
+  author: Marty Oehme
+  description: Installs miniflux as a docker stack service
+  license: GPL-3.0-only
+  min_ansible_version: 2.9
+  galaxy_tags: []
+
+
+dependencies:
+  - docker
+  - docker-swarm
+  - caddy