Bkprt no log fix (#41452)

* no_log even when task_result doesn't provide key

 - now also checks task property
 - added reproducer to tests for unreachable status on item loop

(cherry picked from commit 336b3762b2)

* Add changelog entry for the no_log fix

(cherry picked from commit 5fdd101a3e)

* Tasks that are expected to fail need to begin with a special string

(cherry picked from commit a5fd86cf6d)

changelogs/fragments/no_log_fix_for_connection_exceptions.yaml

@@ -0,0 +1,9 @@
+---
+bugfixes:
+- '**Security Fix** - Some connection exceptions would cause no_log specified on
+  a task to be ignored.  If this happened, the task information, including any
+  private information could have been displayed to stdout and (if enabled, not
+  the default) logged to a log file specified in ansible.cfg''s log_path.
+  Additionally, sites which redirected stdout from ansible runs to a log file
+  may have stored that private information onto disk that way as well.
+  (https://github.com/ansible/ansible/pull/41414)'

lib/ansible/executor/task_result.py

@@ -110,7 +110,7 @@ class TaskResult:
         else:
             ignore = _IGNORE
 
-        if self._result.get('_ansible_no_log', False):
+        if self._task.no_log or self._result.get('_ansible_no_log', False):
             x = {"censored": "the output has been hidden due to the fact that 'no_log: true' was specified for this result"}
             for preserve in _PRESERVE:
                 if preserve in self._result:

test/integration/targets/no_log/no_log_local.yml

@@ -63,3 +63,30 @@
       - name: args should be logged when task-level no_log overrides play-level
         shell: echo "LOG_ME_OVERRIDE"
         no_log: false
+
+      - name: Add a fake host for next play
+        add_host:
+            hostname: fake
+
+- name: use 'fake' unreachable host to force unreachable error
+  hosts: fake
+  gather_facts: no
+  connection: ssh
+  tasks:
+    - name: 'EXPECTED FAILURE: Fail to run a lineinfile task'
+      vars:
+        logins:
+          - machine: foo
+            login: bar
+            password: DO_NOT_LOG_UNREACHABLE_ITEM
+          - machine: two
+            login: three
+            password: DO_NOT_LOG_UNREACHABLE_ITEM
+      lineinfile:
+        path: /dev/null
+        mode: 0600
+        create: true
+        insertafter: EOF
+        line: "machine {{ item.machine }} login {{ item.login }} password {{ item.password }}"
+      loop: "{{ logins }}"
+      no_log: true