<!--- Verify first that your feature was not already discussed on GitHub -->
<!--- Complete *all* sections as described, this form is processed automatically -->

##### SUMMARY
The vmware_cluster_ha module should support advanced configuration parameters in a generic way. 

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
vmware_cluster_ha

##### ADDITIONAL INFORMATION
The feature would allow advanced configurations like isolation address handling.

<!--- Paste example playbooks or commands between quotes below -->
```yaml
name: Enable HA with multiple custom isolation addresses for stretched vSAN
  vmware_cluster_ha:
    hostname: '{{ vcenter_hostname }}'
    username: '{{ vcenter_username }}'
    password: '{{ vcenter_password }}'
    datacenter_name: datacenter
    cluster_name: cluster
    enable_ha: yes
    configuration_parameters:
      das.usedefaultisolationaddress: false
      das.isolationaddress0: '{{ primary_isolation_address }}'
      das.isolationaddress1: '{{ secondary_isolation_address }}'
  delegate_to: localhost
```

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

from pyVmomi import vim, vmodl
except ImportError:
    pass
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.vmware import (PyVmomi, TaskError, find_datacenter_by_name,
                                         vmware_argument_spec, wait_for_task)
from ansible.module_utils._text import to_native
class VMwareCluster(PyVmomi):
    def __init__(self, module):
        super(VMwareCluster, self).__init__(module)
        self.cluster_name = module.params['cluster_name']
        self.datacenter_name = module.params['datacenter']
        self.enable_ha = module.params['enable_ha']
        self.datacenter = None
        self.cluster = None
        self.host_isolation_response = getattr(vim.cluster.DasVmSettings.IsolationResponse, self.params.get('host_isolation_response'))
        if self.enable_ha and (
                self.params.get('slot_based_admission_control') or
                self.params.get('reservation_based_admission_control') or
                self.params.get('failover_host_admission_control')):
            self.ha_admission_control = True
        else:
            self.ha_admission_control = False
        self.datacenter = find_datacenter_by_name(self.content, self.datacenter_name)
        if self.datacenter is None:
            self.module.fail_json(msg="Datacenter %s does not exist." % self.datacenter_name)
        self.cluster = self.find_cluster_by_name(cluster_name=self.cluster_name)
        if self.cluster is None:
            self.module.fail_json(msg="Cluster %s does not exist." % self.cluster_name)
    def get_failover_hosts(self):