Ensure meta tasks don't disrupt host_pinned host/fork affinity

[sivel]

SUMMARY

Ensure meta tasks don't disrupt host_pinned host/fork affinity

ISSUE TYPE

• Bugfix Pull Request

ADDITIONAL INFORMATION

Tests to come later

[sivel]

Reproducer...

.
├── ansible.cfg
│   │ [defaults]
│   │ forks = 2
├── hosts
│   │ localhost0
│   │ localhost1
│   │ localhost2
│   │ localhost3
│   │ localhost4
│   │ localhost5
│   │ localhost6
│   │ localhost7
│   │ localhost8
│   │ localhost9
│   │
│   │ [all:vars]
│   │ ansible_connection=local
│   │ ansible_python_interpreter={{ansible_playbook_python}}
├── include_me.yml
│   │ - debug:
│   │     msg: include
│   │
│   │ - meta: noop
└── playbook.yml
    │ - hosts: all
    │   gather_facts: false
    │   strategy: host_pinned
    │   tasks:
    │     - name: start
    │       debug:
    │         msg: start
    │
    │     - include_tasks:
    │         file: include_me.yml
    │
    │     - name: end
    │       debug:
    │         msg: end

[sivel]

This implementation has a shortcoming, in that meta only tasks won't break out of the inner loop. This can result in an extra non-meta task executing early.

[sivel]

The last commit may fix the previously noted shortcoming