Resolves issue with vmware_host module for v2.0
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_host module.
@kamsz reported this issue in https://github.com/ansible/ansible-modules-extras/pull/1568
Playbook
```
- name: Add Host
local_action:
module: vmware_host
hostname: "{{ mgmt_ip_address }}"
username: "{{ vcsa_user }}"
password: "{{ vcsa_pass }}"
datacenter_name: "{{ mgmt_vdc }}"
cluster_name: "{{ mgmt_cluster }}"
esxi_hostname: "{{ hostvars[item].hostname }}"
esxi_username: "{{ esxi_username }}"
esxi_password: "{{ site_passwd }}"
state: present
with_items: groups['foundation_esxi']
```
Module Testing
```
TASK [Add Host] ****************************************************************
task path: /opt/autodeploy/projects/emmet/site_deploy.yml:214
ESTABLISH LOCAL CONNECTION FOR USER: root
localhost EXEC ( umask 22 && mkdir -p "$( echo $HOME/.ansible/tmp/ansible-tmp-1454693866.1-87710459703937 )" && echo "$( echo $HOME/.ansible/tmp/ansible-tmp-1454693866.1-87710459703937 )" )
localhost PUT /tmp/tmppmr9i9 TO /root/.ansible/tmp/ansible-tmp-1454693866.1-87710459703937/vmware_host
localhost EXEC LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 /usr/bin/python /root/.ansible/tmp/ansible-tmp-1454693866.1-87710459703937/vmware_host; rm -rf "/root/.ansible/tmp/ansible-tmp-1454693866.1-87710459703937/" > /dev/null 2>&1
localhost EXEC ( umask 22 && mkdir -p "$( echo $HOME/.ansible/tmp/ansible-tmp-1454693943.8-75870536677834 )" && echo "$( echo $HOME/.ansible/tmp/ansible-tmp-1454693943.8-75870536677834 )" )
localhost PUT /tmp/tmpVB81f2 TO /root/.ansible/tmp/ansible-tmp-1454693943.8-75870536677834/vmware_host
localhost EXEC LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 /usr/bin/python /root/.ansible/tmp/ansible-tmp-1454693943.8-75870536677834/vmware_host; rm -rf "/root/.ansible/tmp/ansible-tmp-1454693943.8-75870536677834/" > /dev/null 2>&1
localhost EXEC ( umask 22 && mkdir -p "$( echo $HOME/.ansible/tmp/ansible-tmp-1454693991.56-163414752982563 )" && echo "$( echo $HOME/.ansible/tmp/ansible-tmp-1454693991.56-163414752982563 )" )
localhost PUT /tmp/tmpFB7VQB TO /root/.ansible/tmp/ansible-tmp-1454693991.56-163414752982563/vmware_host
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-1454693991.56-163414752982563/vmware_host; rm -rf "/root/.ansible/tmp/ansible-tmp-1454693991.56-163414752982563/" > /dev/null 2>&1
changed: [foundation-vcsa -> localhost] => (item=foundation-esxi-01) => {"changed": true, "invocation": {"module_args": {"cluster_name": "Foundation", "datacenter_name": "Test-Lab", "esxi_hostname": "cscesxtmp001", "esxi_password": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER", "esxi_username": "root", "hostname": "172.27.0.100", "password": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER", "state": "present", "username": "root"}, "module_name": "vmware_host"}, "item": "foundation-esxi-01", "result": "'vim.HostSystem:host-15'"}
changed: [foundation-vcsa -> localhost] => (item=foundation-esxi-02) => {"changed": true, "invocation": {"module_args": {"cluster_name": "Foundation", "datacenter_name": "Test-Lab", "esxi_hostname": "cscesxtmp002", "esxi_password": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER", "esxi_username": "root", "hostname": "172.27.0.100", "password": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER", "state": "present", "username": "root"}, "module_name": "vmware_host"}, "item": "foundation-esxi-02", "result": "'vim.HostSystem:host-20'"}
changed: [foundation-vcsa -> localhost] => (item=foundation-esxi-03) => {"changed": true, "invocation": {"module_args": {"cluster_name": "Foundation", "datacenter_name": "Test-Lab", "esxi_hostname": "cscesxtmp003", "esxi_password": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER", "esxi_username": "root", "hostname": "172.27.0.100", "password": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER", "state": "present", "username": "root"}, "module_name": "vmware_host"}, "item": "foundation-esxi-03", "result": "'vim.HostSystem:host-21'"}
```
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