##### SUMMARY

The following snippet from https://github.com/ansible/ansible/blob/devel/test/integration/targets/vmware_guest/tasks/create_d1_c1_f0.yml uses `autoselect_datastore: True`.

```yaml
- name: create new VMs
  vmware_guest:
    validate_certs: False
    hostname: "{{ vcenter_hostname }}"
    username: "{{ vcenter_username }}"
    password: "{{ vcenter_password }}"
    name: newvm_1
    #template: "{{ item|basename }}"
    guest_id: centos64Guest
    datacenter: "{{ dc1 }}"
    hardware:
        num_cpus: 1
        num_cpu_cores_per_socket: 1
        memory_mb: 256
        hotadd_memory: true
        hotadd_cpu: false
        max_connections: 10
    disk:
        - size: 1gb
          type: thin
          autoselect_datastore: True
    state: poweredoff
    folder: F0
```

One of my two datastores is dedicated to the ISO image and so, is readOnly. But it still get selected consistently. I use the following hack to avoid the problem:

```diff
diff --git a/lib/ansible/modules/cloud/vmware/vmware_guest.py b/lib/ansible/modules/cloud/vmware/vmware_guest.py
index 6a63e97798..3648e3e87f 100644
--- a/lib/ansible/modules/cloud/vmware/vmware_guest.py
+++ b/lib/ansible/modules/cloud/vmware/vmware_guest.py
@@ -1925,6 +1925,15 @@ class PyVmomiHelper(PyVmomi):
 
                 datastore_freespace = 0
                 for ds in datastores:
+                    is_readonly = False
+                    for h in ds.host:
+                        if h.mountInfo.accessMode == 'readOnly':
+                            is_readonly = True
+                            break
+
+                    if is_readonly:
+                        continue
+
                     if (ds.summary.freeSpace > datastore_freespace) or (ds.summary.freeSpace == datastore_freespace and not datastore):
                         # If datastore field is provided, filter destination datastores
                         if 'datastore' in self.params['disk'][0] and \
```
<!--- Explain the problem briefly below -->

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->

vmware_guest

self.configure_hardware_params(vm_obj=self.current_vm_obj)
        self.configure_disks(vm_obj=self.current_vm_obj)
        self.configure_network(vm_obj=self.current_vm_obj)
        self.configure_cdrom(vm_obj=self.current_vm_obj)
        self.customize_customvalues(vm_obj=self.current_vm_obj)
        self.configure_resource_alloc_info(vm_obj=self.current_vm_obj)
        self.configure_vapp_properties(vm_obj=self.current_vm_obj)
        if self.params['annotation'] and self.current_vm_obj.config.annotation != self.params['annotation']:
            self.configspec.annotation = str(self.params['annotation'])
            self.change_detected = True
        if self.params['resource_pool']:
            self.relospec.pool = self.get_resource_pool()
            if self.relospec.pool != self.current_vm_obj.resourcePool:
                task = self.current_vm_obj.RelocateVM_Task(spec=self.relospec)
                self.wait_for_task(task)
                if task.info.state == 'error':
                    return {'changed': self.change_applied, 'failed': True, 'msg': task.info.error.msg, 'op': 'relocate'}
        
        if self.change_detected:
            task = None
            try:
                task = self.current_vm_obj.ReconfigVM_Task(spec=self.configspec)
            except vim.fault.RestrictedVersion as e:
                self.module.fail_json(msg="Failed to reconfigure virtual machine due to"
                                          " product versioning restrictions: %s" % to_native(e.msg))
            self.wait_for_task(task)
            if task.info.state == 'error':
                return {'changed': self.change_applied, 'failed': True, 'msg': task.info.error.msg, 'op': 'reconfig'}
        
        if self.params['uuid'] and self.params['name'] and self.params['name'] != self.current_vm_obj.config.name: