Verify windows password is part of the provided options

WinRM config data is passed in the user data to the AWS api.
Part of this includes an optional winrm user creation.
The user can only be created if a password is passed to the gem.
it cannot wait for the password from AWS, as this is only available
after the user data is paased and the server created

lib/chef/knife/ec2_server_create.rb

@@ -1011,7 +1011,7 @@ def eip_scope
       def ssl_config_user_data
       user_related_commands = ""
       winrm_user = locate_config_value(:winrm_user).split("\\")
-      if (winrm_user[0] == ".") || (winrm_user[0] == "") ||(winrm_user.length == 1)
+      if (winrm_user[0] == ".") || (winrm_user[0] == "") ||(winrm_user.length == 1) && locate_config_value(:winrm_password)
         user_related_commands = <<-EOH
 net user /add #{locate_config_value(:winrm_user).delete('.\\')} #{windows_password} #{@allow_long_password};
 net localgroup Administrators /add #{locate_config_value(:winrm_user).delete('.\\')};