Ignore ansible-lint warnings about storpool files and zuul.d dir (#1210)

Also don't add .mypy_cache to galaxy builds (58% of disk usage or 54MB uncompressed).
diff --git a/.ansible-lint b/.ansible-lint
index 99ed625..c81fa73 100644
--- a/.ansible-lint
+++ b/.ansible-lint
@@ -8,6 +8,8 @@
   - plugins/filter
   - roles/defaults/vars/main.yml
   - roles/kube_prometheus_stack/files/jsonnet
+  - roles/storpool_csi/files
+  - zuul.d
 
 mock_roles:
   - opendev.container_registry