Modify task executor to reuse connection inside a loop. Fix WinRM connection to set _connected properly and display when remote shell is opened/closed. Add integration test using raw + with_items.

test/integration/roles/test_win_raw/tasks/main.yml

@@ -101,3 +101,16 @@
   assert:
     that:
       - "raw_result2.stdout_lines[0] == '--% icacls D:\\\\somedir\\\\ /grant \"! ЗАО. Руководство\":F'"
+
+# Assumes MaxShellsPerUser == 30 (the default)
+
+- name: test raw + with_items to verify that winrm connection is reused for each item
+  raw: echo "{{item}}"
+  with_items: "{{range(32)|list}}"
+  register: raw_with_items_result
+
+- name: check raw + with_items result
+  assert:
+    that:
+      - "not raw_with_items_result|failed"
+      - "raw_with_items_result.results|length == 32"