Fix all VMware examples to use delegate_to (#43426)

Some users have problems using the VMware modules because they use the
vCenter as target, and Ansible uses SSH to connect to the targets.

Eventually we need to update the VMware guide to explain how the modules
work, but the first fix is to update the examples.

(We should backport to v2.6 and v2.5 too)

lib/ansible/modules/cloud/vmware/vmware_host.py

@@ -112,6 +112,7 @@ EXAMPLES = r'''
     esxi_username: '{{ esxi_username }}'
     esxi_password: '{{ esxi_password }}'
     state: present
+  delegate_to: localhost
 
 - name: Add ESXi Host to vCenter under a specific folder
   vmware_host:
@@ -125,6 +126,7 @@ EXAMPLES = r'''
     esxi_password: '{{ esxi_password }}'
     state: present
     add_connected: True
+  delegate_to: localhost
 
 - name: Reconnect ESXi Host (with username/password set)
   vmware_host:
@@ -137,6 +139,7 @@ EXAMPLES = r'''
     esxi_username: '{{ esxi_username }}'
     esxi_password: '{{ esxi_password }}'
     state: reconnect
+  delegate_to: localhost
 
 - name: Reconnect ESXi Host (with default username/password)
   vmware_host:
@@ -147,6 +150,7 @@ EXAMPLES = r'''
     cluster_name: cluster_name
     esxi_hostname: '{{ esxi_hostname }}'
     state: reconnect
+  delegate_to: localhost
 
 - name: Add ESXi Host with SSL Thumbprint to vCenter
   vmware_host:
@@ -160,6 +164,7 @@ EXAMPLES = r'''
     esxi_password: '{{ esxi_password }}'
     esxi_ssl_thumbprint: "3C:A5:60:6F:7A:B7:C4:6C:48:28:3D:2F:A5:EC:A3:58:13:88:F6:DD"
     state: present
+  delegate_to: localhost
 '''
 
 RETURN = r'''