improve meta file

meta/main.yml

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+galaxy_info:
+  role_name: acme
+  author: HgO
+  description: Ansible role to manage ACME certificates.
+  company: PPBe
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  issue_tracker_url: https://dev.parley.be/PPBe/ansible-role-acme/issues
+
+  # Some suggested licenses:
+  # - BSD (default)
+  # - MIT
+  # - GPLv2
+  # - GPLv3
+  # - Apache
+  # - CC-BY
+  license: GPLv3
+
+  min_ansible_version: 2.9
+
+  # If this a Container Enabled role, provide the minimum Ansible Container version.
+  # min_ansible_container_version:
+
+  # Optionally specify the branch Galaxy will use when accessing the GitHub
+  # repo for this role. During role install, if no tags are available,
+  # Galaxy will use this branch. During import Galaxy will access files on
+  # this branch. If Travis integration is configured, only notifications for this
+  # branch will be accepted. Otherwise, in all cases, the repo's default branch
+  # (usually master) will be used.
+  #github_branch:
+
+  #
+  # platforms is a list of platforms, and each platform has a name and a list of versions.
+  #
+  platforms:
+  - name: Ubuntu
+    versions:
+    - all
+  - name: Debian
+    versions:
+    - all
+
+  galaxy_tags: [acme, letsencrypt, certificate]
+    # List tags for your role here, one per line. A tag is a keyword that describes
+    # and categorizes the role. Users find roles by searching for tags. Be sure to
+    # remove the '[]' above, if you add tags to this list.
+    #
+    # NOTE: A tag is limited to a single word comprised of alphanumeric characters.
+    #       Maximum 20 tags per role.
+
+dependencies: []
+  # List your role dependencies here, one per line. Be sure to remove the '[]' above,
+  # if you add dependencies to this list.