Fix error from ansible-lint versions >=6.11.0. (#4492)

* Fix error from ansible-lint versions >=6.11.0.

The JSON output format of ansible-lint has changed since
6.11.0. Issue locations can have either a 'positions' or
a 'lines' member, rather than just a 'lines' member as it
was before. This fix checks which member is present, and
passes that member name to subsequent dictionary lookups.

The error was caused by the following change:
https://github.com/ansible/ansible-lint/pull/2897

* Add ansible-lint test to check each type of ansible-lint issue json.

* Change long single-line JSON in ansible test into multiline JSON.

* Fix linting errors in ansible_lint.vim.

ale_linters/ansible/ansible_lint.vim

@@ -29,10 +29,20 @@ function! ale_linters#ansible#ansible_lint#Handle(buffer, version, lines) abort
 
         for l:issue in l:linter_issues
             if ale#path#IsBufferPath(a:buffer, l:issue.location.path)
+                if exists('l:issue.location.positions')
+                    let l:coord_keyname = 'positions'
+                else
+                    let l:coord_keyname = 'lines'
+                endif
+
+                let l:column_member = printf(
+                \    'l:issue.location.%s.begin.column', l:coord_keyname
+                \)
+
                 call add(l:output, {
-                \   'lnum': exists('l:issue.location.lines.begin.column') ? l:issue.location.lines.begin.line :
-                \           l:issue.location.lines.begin,
-                \   'col': exists('l:issue.location.lines.begin.column') ? l:issue.location.lines.begin.column : 0,
+                \   'lnum': exists(l:column_member) ? l:issue.location[l:coord_keyname].begin.line :
+                \           l:issue.location[l:coord_keyname].begin,
+                \   'col': exists(l:column_member) ? l:issue.location[l:coord_keyname].begin.column : 0,
                 \   'text': l:issue.check_name,
                 \   'detail': l:issue.description,
                 \   'code': l:issue.severity,