ci: Use supported ansible-lint action; run ansible-lint against the c…

…ollection

The old ansible-community ansible-lint is deprecated.  There is a
new ansible-lint github action.

The latest Ansible repo gating tests run ansible-lint against
the collection format instead of against individual roles.
We have to convert the role to collection format before running
ansible-test.

Role developers can run this locally using
`tox -e collection,ansible-lint-collection`
See linux-system-roles/tox-lsr#125

Add `---` doc start to .markdownlint.yaml

Signed-off-by: Rich Megginson <rmeggins@redhat.com>

.github/workflows/ansible-lint.yml

@@ -55,6 +55,13 @@ jobs:
           # ansible-lint action requires a .git directory???
           # https://github.com/ansible/ansible-lint/blob/main/action.yml#L45
           mkdir -p "$coll_dir/.git"
+          # need .ansible-lint at the collection root directory
+          for file in "$coll_dir"/roles/*/.ansible-lint; do
+            if [ -f "$file" ]; then
+              cp "$file" "$coll_dir"
+              break
+            fi
+          done
           # doesn't like mock_roles
           sed -e '/^mock_roles:/d' -e '/- linux-system-roles[.]/d' \
             -i "$coll_dir/.ansible-lint"