##### SUMMARY
Unable to use the mount mode :nocopy on volume 

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
docker_container

##### ANSIBLE VERSION
```
ansible 2.8.1
  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 = /var/lib/awx/venv/venv-Ansible-28-python27/lib/python2.7/site-packages/ansible
  executable location = /var/lib/awx/venv/venv-Ansible-28-python27/bin/ansible
  python version = 2.7.5 (default, Jun 20 2019, 20:27:34) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36)]
```

##### CONFIGURATION
<!--- Paste verbatim output from "ansible-config dump --only-changed" between quotes -->
```
N/A
```

##### OS / ENVIRONMENT
AWX 3.0/docker 1.13/ RHEL7.4


##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->

<!--- Paste example playbooks or commands between quotes below -->
```yaml
- name: start nexus_ihm services
  docker_container:
    name: nexus_ihm
    image: '{{ docker_images.nexus_ihm.image }}:{{ docker_images.nexus_ihm.version }}'
    state: started
    recreate: yes
    log_driver: json-file
    restart_policy: 'unless-stopped'
    hostname: nexus_ihm
    env:
      TZ: Europe/Paris
    volumes:
      - 'nfsdata:/nexus-data:nocopy'
      - 'nfsbackup:/backup'
```
##### EXPECTED RESULTS
Beeing able to access the volume within the container like in :  

```sh
[root@LX01665L ~]# docker run --rm -ti -v nfsdata:/test --name test alpine /bin/sh
/ # ls /test/
config.json  init-stdin   init-stdout
/ # exit
[root@LX01665L ~]# docker run --rm -ti -v nfsdata:/test:nocopy --name test alpine /bin/sh
/ # ls /test/
backup               etc                  kar                  port
blobs                generated-bundles    keystores            restore-from-backup
cache                health-check         lock                 tmp
db                   instances            log                  upgrades
elasticsearch        javaprefs            orient
/ #
```

##### ACTUAL RESULTS
The task crash with (NB, accordingly to the documentation in https://docs.ansible.com/ansible/latest/modules/docker_container_module.html where it's not specified beeing usable ) : 

```
fatal: [lx01665l.tb.uro.equant.com]: FAILED! => {"changed": false, "msg": "Found invalid volumes mode: nocopy"}
```

- Runtime to use for the container.
    type: str
    version_added: "2.8"
  shm_size:
    description:
      - "Size of C(/dev/shm) (format: C(<number>[<unit>])). Number is positive integer.
        Unit can be C(B) (byte), C(K) (kibibyte, 1024B), C(M) (mebibyte), C(G) (gibibyte),
        C(T) (tebibyte), or C(P) (pebibyte)."
      - Omitting the unit defaults to bytes. If you omit the size entirely, the system uses C(64M).
    type: str
  security_opts:
    description:
      - List of security options in the form of C("label:user:User")
    type: list
  state:
    description:
      - 'I(absent) - A container matching the specified name will be stopped and removed. Use force_kill to kill the container
         rather than stopping it. Use keep_volumes to retain volumes associated with the removed container.'
      - 'I(present) - Asserts the existence of a container matching the name and any provided configuration parameters. If no
        container matches the name, a container will be created. If a container matches the name but the provided configuration
        does not match, the container will be updated, if it can be. If it cannot be updated, it will be removed and re-created
        with the requested config. Image version will be taken into account when comparing configuration. To ignore image
        version use the ignore_image option. Use the recreate option to force the re-creation of the matching container. Use
        force_kill to kill the container rather than stopping it. Use keep_volumes to retain volumes associated with a removed
        container.'
      - 'I(started) - Asserts there is a running container matching the name and any provided configuration. If no container
        matches the name, a container will be created and started. If a container matching the name is found but the
        configuration does not match, the container will be updated, if it can be. If it cannot be updated, it will be removed
        and a new container will be created with the requested configuration and started. Image version will be taken into
        account when comparing configuration. To ignore image version use the ignore_image option. Use recreate to always