make default credentials verify ws

Host used to default credential verification to ws.
HostEsx is the only host that implements ws.
So now, the default verification is going over ssh.

This change keeps the default verification method as ws for Esx Hosts

Author: kbrock

app/models/manageiq/providers/vmware/infra_manager/host_esx.rb

@@ -164,6 +164,10 @@ def verify_credentials_with_ws(auth_type = nil)
     end
   end
 
+  def verify_credentials_default(auth_type, _options)
+    verify_credentials_with_ws(auth_type)
+  end
+
   def refresh_logs
     if self.missing_credentials?
       _log.warn "No credentials defined for Host [#{name}]"