acu66732 fix child_account update href 
acu66732 fix child_account update href 

This needs to be handled specially because there is no real ChildAccount resource.
On the other hand, the API does not support Account#update either.
Therefore, we can pretend that we are always dealing with a ChildAccount resource.

Usage:
child_account = @client.child_accounts.index.last
child_account.update(:name => "Account 62840")

rightscale/right_api_client,rightscale/right_api_client,lopaka/right_api_client_tls