Docker::Container product with sync and async support
Set default error callback in client, to use Product::error

Corrected parsing of 'get_params' and 'post_params' args
Some fixes:
 - Rest::Request with incorrect callback (onFailure)
 - Rest::Product schematize pre-analyze request hook to sync requests

	modified:   lib/Eixo/Rest/Product.pm
	modified:   lib/Eixo/Rest/Request.pm
Base image commands tested!

	modified:   lib/Eixo/Docker/Image.pm
	modified:   t/images_integration_t.pl