Add compatcheck role

Meant to be used by other roles

roles/compatcheck/meta/argument_specs.yaml

@@ -0,0 +1,32 @@
+---
+argument_specs:
+  main:
+    short_description: Checks that the host is running a supported os
+    description:
+      - Checks that the host is runing a supported os.
+      - Supported distros and versions are defined by the compatcheck_supported_distros variable.
+      - This role is used by other roles to check compatibility.
+    options:
+      compatcheck_supported_distributions:
+        description: A list of distros and versions supported by the role.
+        type: list
+        required: true
+        elements: dict
+        options:
+          name:
+            description: Name of the distro, in lowercase
+            type: str
+            required: true
+            choices:
+              - debian
+              - ubuntu
+              - fedora
+              - archlinux
+          version_min:
+            description: Earliest supported major version. Allows any version if not specified.
+            type: int
+            required: false
+          version_max:
+            description: Last supported major version. Allows any version if not specified.
+            type: int
+            required: false