When this module was written back in May 2015 we were using 1.9.x. Being lazy I added to param the objects that the other functions would need. What I have noticed is in 2.0 exit_json is trying to jsonify those complex objects and failing. This PR resolves that issue with the vmware_cluster module.
@kamsz reported this issue in https://github.com/ansible/ansible-modules-extras/pull/1568
Playbook
```
- name: Create Cluster
local_action:
module: vmware_cluster
hostname: "{{ mgmt_ip_address }}"
username: "{{ vcsa_user }}"
password: "{{ vcsa_pass }}"
datacenter_name: "{{ mgmt_vdc }}"
cluster_name: "{{ mgmt_cluster }}"
enable_ha: True
enable_drs: True
enable_vsan: True
```
Module testing
```
TASK [Create Cluster] **********************************************************
task path: /opt/autodeploy/projects/emmet/site_deploy.yml:188
ESTABLISH LOCAL CONNECTION FOR USER: root
localhost EXEC ( umask 22 && mkdir -p "$( echo $HOME/.ansible/tmp/ansible-tmp-1454693788.92-14097560271233 )" && echo "$( echo $HOME/.ansible/tmp/ansible-tmp-1454693788.92-14097560271233 )" )
localhost PUT /tmp/tmpAJfdPb TO /root/.ansible/tmp/ansible-tmp-1454693788.92-14097560271233/vmware_cluster
localhost EXEC LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 /usr/bin/python /root/.ansible/tmp/ansible-tmp-1454693788.92-14097560271233/vmware_cluster; rm -rf "/root/.ansible/tmp/ansible-tmp-1454693788.92-14097560271233/" > /dev/null 2>&1
changed: [foundation-vcsa -> localhost] => {"changed": true, "invocation": {"module_args": {"cluster_name": "Foundation", "datacenter_name": "Test-Lab", "enable_drs": true, "enable_ha": true, "enable_vsan": true, "hostname": "172.27.0.100", "password": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER", "state": "present", "username": "root"}, "module_name": "vmware_cluster"}}
```
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