Fix/lint

tools/nix/ansible.nix

+{ pkgs }:
+with pkgs.buildPackages; [
+  ansible
+  ansible-lint
+  (pkgs.python3.withPackages (python-pkgs: [
+    python-pkgs.openstacksdk
+    python-pkgs.passlib
+    python-pkgs.python-ldap
+    python-pkgs.boto3
+    python-pkgs.configparser
+    python-pkgs.pyhcl
+    python-pkgs.pytest
+  ]))
+];