fix delegate_to integration test (#83865)

* the test was previously passing erroneously due to the `timeout` elapsing in CI, and that the `failed` test does not encompass `unreachable`

test/integration/targets/delegate_to/delegate_with_fact_from_delegate_host.yml

@@ -1,18 +1,37 @@
-- name: ensure we can use fact on delegated host for connection info
+- name: create a dedicated broken host and a working copy of localhost to delegate to
   hosts: localhost
   gather_facts: no
   tasks:
-    - add_host: name=f31 bogus_user=notme ansible_connection=ssh ansible_host=4.2.2.2
+    - add_host:
+        name: busted
+        ansible_connection: ssh
+        ansible_host: localhost
+        ansible_port: 1
+    - add_host:
+        name: delegate_to_local
+        ansible_connection: local
+        ansible_python_interpreter: '{{ ansible_playbook_python }}'
 
-    - name: if not overriding with delegated host info, will not be unreachable
+- name: play targets an unreachable host, delegates to a working one
+  hosts: busted
+  gather_facts: no
+  tasks:
+    - name: attempt to connect to a broken host
       ping:
-      timeout: 5
+      timeout: 5  # backstop for a tarpit port or dropped packets
-      delegate_to: f31
       ignore_errors: true
       ignore_unreachable: true
-      register: delping
+      register: broken_ping
+    - assert:
+        that:
+         - broken_ping is unreachable
+
+    - name: delegate to the valid host
+      ping:
+      delegate_to: delegate_to_local
+      register: delegated_ping
 
-    - name: ensure that the expected happened
+    - assert:
-      assert:
         that:
-          - delping is failed
+          - delegated_ping is success
+          - delegated_ping is reachable