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/_vsphere_guest.py

@@ -176,6 +176,7 @@ EXAMPLES = '''
     esxi:
       datacenter: MyDatacenter
       hostname: esx001.mydomain.local
+  delegate_to: localhost
 
 # Reconfigure the CPU and Memory on the newly created VM
 # Will return the changes made
@@ -208,6 +209,7 @@ EXAMPLES = '''
     esxi:
       datacenter: MyDatacenter
       hostname: esx001.mydomain.local
+  delegate_to: localhost
 
 # Deploy a guest from a template
 - vsphere_guest:
@@ -221,15 +223,16 @@ EXAMPLES = '''
     resource_pool: "/Resources"
     vm_extra_config:
       folder: MyFolder
+  delegate_to: localhost
 
 # Task to gather facts from a vSphere cluster only if the system is a VMware guest
-
 - vsphere_guest:
     vcenter_hostname: vcenter.mydomain.local
     username: myuser
     password: mypass
     guest: newvm001
     vmware_guest_facts: yes
+  delegate_to: localhost
 
 ---
 # Typical output of a vsphere_facts run on a guest
@@ -273,6 +276,7 @@ EXAMPLES = '''
     guest: newvm001
     state: absent
     force: yes
+  delegate_to: localhost
 '''
 
 import os