##### SUMMARY
I am trying to apply Content Filtering rules using meraki_content_filter and when I use net_id with a valid network ID, I get an error fatal: [localhost -> localhost]: FAILED! => {"changed": false, "msg": "No network found with the name None", "response": "OK (unknown bytes)", "status": 200}

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
meraki_content_filter

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
ansible 2.8.1
  config file = /home/amestruetemper.com/mwinslow/.ansible.cfg
  configured module search path = [u'/home/amestruetemper.com/mwinslow/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/site-packages/ansible
  executable location = /usr/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 -->
```paste below
DEFAULT_HOST_LIST(/home/amestruetemper.com/mwinslow/.ansible.cfg) = [u'/home/amestruetemper.com/mwinslow/ansible/inventory']
DEFAULT_PRIVATE_KEY_FILE(/home/amestruetemper.com/mwinslow/.ansible.cfg) = /etc/ansible/keys/id_rsa
DEFAULT_ROLES_PATH(/home/amestruetemper.com/mwinslow/.ansible.cfg) = [u'/home/amestruetemper.com/mwinslow/ansible/roles']
DEFAULT_STDOUT_CALLBACK(/home/amestruetemper.com/mwinslow/.ansible.cfg) = skippy
HOST_KEY_CHECKING(/home/amestruetemper.com/mwinslow/.ansible.cfg) = False

```

##### OS / ENVIRONMENT
<!--- Provide all relevant information below, e.g. target OS versions, network device firmware, etc. -->
CentOS Linux release 7.6.1810 (Core)

##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->
Create a playbook following the doc but replace net_name with net_id

<!--- Paste example playbooks or commands between quotes below -->
```yaml
- name: meraki test
  hosts: localhost
  tasks:
    - name: Set Content Filtering
      meraki_content_filtering:
        auth_key: VALID_KEY
        org_id: VALID_ORG
        net_id: N_VALID_NET_ID
        state: present
        category_list_size: top sites
        blocked_categories:
          - "Adult and Pornography"
          - "Alcohol and Tobacco"
          - "Illegal"
      delegate_to: localhost

```

<!--- HINT: You can paste gist.github.com links for larger files -->

##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
It should add content filtering rules to the test network.

##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->
It fails because it is looking for net_name.  If I change net_id to net_name and put the network name in, it will work.  I need to use net_id so that if a network name changes it won't affect the script.
<!--- Paste verbatim command output between quotes -->
```paste below
PLAY [meraki test] ************************************************************************************************************************************************************************

TASK [Gathering Facts] ********************************************************************************************************************************************************************
ok: [localhost]

TASK [Set Content Filtering] **************************************************************************************************************************************************************
fatal: [localhost -> localhost]: FAILED! => {"changed": false, "msg": "No network found with the name None", "response": "OK (unknown bytes)", "status": 200}

PLAY RECAP ********************************************************************************************************************************************************************************
localhost                  : ok=1    changed=0    unreachable=0    failed=1    skipped=0    rescued=0    ignored=0

```

for i in full_list['categories']:
        if i['name'] == category:
            return i['id']
    meraki.fail_json(msg="{0} is not a valid content filtering category".format(category))
def main():
    
    
    argument_spec = meraki_argument_spec()
    argument_spec.update(
        net_id=dict(type='str'),
        net_name=dict(type='str', aliases=['network']),
        state=dict(type='str', default='present', choices=['present', 'query']),
        allowed_urls=dict(type='list'),
        blocked_urls=dict(type='list'),
        blocked_categories=dict(type='list'),
        category_list_size=dict(type='str', choices=['top sites', 'full list']),
        subset=dict(type='str', choices=['categories', 'policy']),
    )