Fixing some delegate_to bugs

* Moving connection creation until after the task is post_validated,
  to make sure all fields are properly templated (#11230)
* Fixing problems related to the connection method and remote address
  lookup on the delegated-to host

Fixes #11230

lib/ansible/inventory/host.py

@@ -123,6 +123,7 @@ class Host:
         results = combine_vars(results, self.vars)
         results['inventory_hostname'] = self.name
         results['inventory_hostname_short'] = self.name.split('.')[0]
+        results['ansible_ssh_host'] = self.ipv4_address
         results['group_names'] = sorted([ g.name for g in groups if g.name != 'all'])
         return results