##### SUMMARY

The chroot connection plugin crashes with an exception: `AttributeError: 'Connection' object has no attribute '_load_name'`

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME

chroot connection plugin

##### ANSIBLE VERSION

```
ansible 2.8.2
  config file = /etc/ansible/ansible.cfg
  configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 2.7.13 (default, Sep 26 2018, 18:42:22) [GCC 6.3.0 20170516]
```

##### OS / ENVIRONMENT

Debian 9 with ansible 2.8.2-1ppa~trusty from the ppa:ansible/ansible

##### STEPS TO REPRODUCE

```
# ansible -m setup -c chroot -i /target, all -vvv
```

##### EXPECTED RESULTS

Ansible should run in a `chroot /target` environment and report the discovered facts.

##### ACTUAL RESULTS

```
ansible 2.8.2
  config file = /etc/ansible/ansible.cfg
  configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 2.7.13 (default, Sep 26 2018, 18:42:22) [GCC 6.3.0 20170516]
Using /etc/ansible/ansible.cfg as config file
Unable to parse address from hostname, leaving unchanged: Not a valid network hostname: /target
Parsed /target, inventory source with host_list plugin
META: ran handlers
The full traceback is:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/ansible/executor/task_executor.py", line 144, in run
    res = self._execute()
  File "/usr/lib/python2.7/dist-packages/ansible/executor/task_executor.py", line 590, in _execute
    self._connection = self._get_connection(variables=variables, templar=templar)
  File "/usr/lib/python2.7/dist-packages/ansible/executor/task_executor.py", line 892, in _get_connection
    ansible_playbook_pid=to_text(os.getppid())
  File "/usr/lib/python2.7/dist-packages/ansible/plugins/loader.py", line 579, in get
    obj = obj(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/ansible/plugins/connection/chroot.py", line 99, in __init__
    if os.path.isabs(self.get_option('chroot_exe')):
  File "/usr/lib/python2.7/dist-packages/ansible/plugins/__init__.py", line 58, in get_option
    option_value = C.config.get_config_value(option, plugin_type=get_plugin_class(self), plugin_name=self._load_name, variables=hostvars)
AttributeError: 'Connection' object has no attribute '_load_name'

/target | FAILED! => {
    "msg": "Unexpected failure during module execution.", 
    "stdout": ""
}
```

- name: ANSIBLE_EXECUTABLE
        vars:
          - name: ansible_executable
        default: /bin/sh
      chroot_exe:
        version_added: '2.8'
        description:
            - User specified chroot binary
        ini:
          - section: chroot_connection
            key: exe
        env:
          - name: ANSIBLE_CHROOT_EXE
        vars:
          - name: ansible_chroot_exe
        default: chroot
"""
import os
import os.path
import subprocess
import traceback
from ansible.errors import AnsibleError
from ansible.module_utils.basic import is_executable
from ansible.module_utils.common.process import get_bin_path
from ansible.module_utils.six.moves import shlex_quote
from ansible.module_utils._text import to_bytes, to_native
from ansible.plugins.connection import ConnectionBase, BUFSIZE
from ansible.utils.display import Display
display = Display()
class Connection(ConnectionBase):