Use the .yaml file extension for all YAML files

playbooks/roles/ola/meta/argument_specs.yaml

@@ -0,0 +1,22 @@
+---
+argument_specs:
+  main:
+    options:
+      ola__configs:
+        description: A list of ola configurations.
+        type: list
+        elements: dict
+        required: true
+        options:
+          name:
+            description: >-
+              The name of the configuration file, where the configuration should
+              be deployed to. The file will be placed under `/etc/ola/` and
+              `.conf` will be appended to the given name. So in the end the path
+              will be like this: `/etc/ola/\{\ name \}\}.conf`.
+            type: str
+            required: true
+          content:
+            description: The content of the configuration.
+            type: str
+            required: true