Print skip reason for skipped meta tasks instead of an empty msg in -vv (#78681)

Fixes #77315

changelogs/fragments/77315-fix-meta-vv-header.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - Fix ``-vv`` output for meta tasks to not have an empty message when skipped, print the skip reason instead. (https://github.com/ansible/ansible/issues/77315)

lib/ansible/plugins/strategy/__init__.py

@@ -912,7 +912,7 @@ class StrategyBase:
             return task.evaluate_conditional(templar, all_vars)
 
         skipped = False
-        msg = ''
+        msg = meta_action
         skip_reason = '%s conditional evaluated to False' % meta_action
         if isinstance(task, Handler):
             self._tqm.send_callback('v2_playbook_on_handler_task_start', task)
@@ -1049,7 +1049,9 @@ class StrategyBase:
         else:
             result['changed'] = False
 
-        display.vv("META: %s" % msg)
+        if not task.implicit:
+            header = skip_reason if skipped else msg
+            display.vv(f"META: {header}")
 
         if isinstance(task, Handler):
             task.remove_host(target_host)

test/integration/targets/meta_tasks/runme.sh

@@ -6,7 +6,7 @@ set -eux
 for test_strategy in linear free; do
   out="$(ansible-playbook test_end_host.yml -i inventory.yml -e test_strategy=$test_strategy -vv "$@")"
 
-  grep -q "META: end_host conditional evaluated to false, continuing execution for testhost" <<< "$out"
+  grep -q "META: end_host conditional evaluated to False, continuing execution for testhost" <<< "$out"
   grep -q "META: ending play for testhost2" <<< "$out"
   grep -q '"skip_reason": "end_host conditional evaluated to False, continuing execution for testhost"' <<< "$out"
   grep -q "play not ended for testhost" <<< "$out"
@@ -14,7 +14,7 @@ for test_strategy in linear free; do
 
   out="$(ansible-playbook test_end_host_fqcn.yml -i inventory.yml -e test_strategy=$test_strategy -vv "$@")"
 
-  grep -q "META: end_host conditional evaluated to false, continuing execution for testhost" <<< "$out"
+  grep -q "META: end_host conditional evaluated to False, continuing execution for testhost" <<< "$out"
   grep -q "META: ending play for testhost2" <<< "$out"
   grep -q '"skip_reason": "end_host conditional evaluated to False, continuing execution for testhost"' <<< "$out"
   grep -q "play not ended for testhost" <<< "$out"