Fix regression in search path behaviour

This PR fixes a few issues:

- Missing role parent directory for relative paths
- Fix integration tests (add missing stage)
- Redesign integration tests
- Incorrect order with tasks-lookups
- Duplicate paths are listed
- Repetitive tasks/tasks or files/files were possible

==== using copy with test.txt
Before:
```
   491 1481281038.29393: search_path:
        /home/dag/home-made/ansible.testing/roles/test134/files/test.txt
        /home/dag/home-made/ansible.testing/roles/test134/tasks/test.txt
        /home/dag/home-made/ansible.testing/roles/test134/tasks/files/test.txt
        /home/dag/home-made/ansible.testing/roles/test134/tasks/tasks/test.txt
        /home/dag/home-made/ansible.testing/files/test.txt
        /home/dag/home-made/ansible.testing/test.txt
```

After:
```
 32505 1481280963.22418: search_path:
        /home/dag/home-made/ansible.testing/roles/test134/files/test.txt
        /home/dag/home-made/ansible.testing/roles/test134/test.txt
        /home/dag/home-made/ansible.testing/roles/test134/tasks/files/test.txt
        /home/dag/home-made/ansible.testing/roles/test134/tasks/test.txt
        /home/dag/home-made/ansible.testing/files/test.txt
        /home/dag/home-made/ansible.testing/test.txt
```

==== Using copy with files/test.txt

Before:
```
 31523 1481280499.63052: search_path:
        /home/dag/home-made/ansible.testing/roles/test134/files/test.txt
        /home/dag/home-made/ansible.testing/roles/test134/tasks/files/test.txt
        /home/dag/home-made/ansible.testing/roles/test134/tasks/files/test.txt
        /home/dag/home-made/ansible.testing/roles/test134/tasks/tasks/files/test.txt
        /home/dag/home-made/ansible.testing/files/files/test.txt
        /home/dag/home-made/ansible.testing/files/test.txt
```

After:
```
 31110 1481280299.38778: search_path:
        /home/dag/home-made/ansible.testing/roles/test134/files/test.txt
        /home/dag/home-made/ansible.testing/roles/test134/tasks/files/test.txt
        /home/dag/home-made/ansible.testing/files/test.txt
```

==== Using template with files/test.txt.j2
Before:
```
 30074 1481280064.15191: search_path:
        /home/dag/home-made/ansible.testing/roles/test134/templates/files/test.txt.j2
        /home/dag/home-made/ansible.testing/roles/test134/tasks/files/test.txt.j2
        /home/dag/home-made/ansible.testing/roles/test134/tasks/templates/files/test.txt.j2
        /home/dag/home-made/ansible.testing/roles/test134/tasks/tasks/files/test.txt.j2
        /home/dag/home-made/ansible.testing/templates/files/test.txt.j2
        /home/dag/home-made/ansible.testing/files/test.txt.j2
```

After:
```
 29201 1481279823.52752: search_path:
        /home/dag/home-made/ansible.testing/roles/test134/templates/files/test.txt.j2
        /home/dag/home-made/ansible.testing/roles/test134/files/test.txt.j2
        /home/dag/home-made/ansible.testing/roles/test134/tasks/templates/files/test.txt.j2
        /home/dag/home-made/ansible.testing/roles/test134/tasks/files/test.txt.j2
        /home/dag/home-made/ansible.testing/templates/files/test.txt.j2
        /home/dag/home-made/ansible.testing/files/test.txt.j2
```

This fixes #19048

(cherry picked from commit 7c71c678fae64f6962604b76664dd320128130d1)

0 files changed, 0 insertions, 0 deletions