add karma role and fix lint errors

roles/karma/README.md

@@ -0,0 +1,53 @@
+genlab.karma
+=========
+This is the ansible role to install and configure Karma - alert dashboard for Prometheus Alertmanager (https://github.com/prymitive/karma)
+
+------------
+⚠️ Do not forget to update:
+
+- `meta/main.yml`
+- Conda/Mamba manifests
+- this README =) including *the name at the top* and *maintainers*.
+
+Requirements
+------------
+
+None
+
+Role Variables
+--------------
+```yaml
+karma_version: "0.121" - karma version
+karma_user: karma - name of karma system user
+karma_group: karma - name of karma system group
+karma_dir: /etc/karma - path where to unpack karma
+karma_config_dir: /etc/karma/conf - where to copy configuration file
+config_source_dir: source - path to source dir with karma config on localhost
+```
+
+Dependencies
+------------
+
+None
+
+Example Playbook
+----------------
+
+```yaml
+roles:
+    - role: genlab.karma
+      karma_version: "0.121"
+      config_source_dir: "karma/"
+      karma_dir: "/etc/karma"
+      karma_config_dir: "/etc/karma/config"
+```
+
+License
+-------
+
+BSD
+
+Author Information
+------------------
+
+corvus-migratorius@proton.me