Changed all references from Trusted Builds to Automated Builds

* Updated docker images output
* Updated docker images -t/--trusted option to -a/--automated
* Changed *trusted variables to *automated
* Changed is_trusted to is_automated
* Updated man pages, docs and completion
* Updated API documentation

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)