resume pulling the layer on disconnect

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)
pull only busybox:latest

Docker-DCO-1.1-Signed-off-by: Victor Vieux <vieux@docker.com> (github: vieux)
fix busybox image detection

Docker-DCO-1.1-Signed-off-by: Victor Vieux <vieux@docker.com> (github: vieux)
Merge pull request #6165 from vieux/update_tests

Update tests regarding busybox & inspect
switch skipping from error to debug

Docker-DCO-1.1-Signed-off-by: Victor Vieux <vieux@docker.com> (github: vieux)
Merge pull request #6166 from vieux/debug_skipping

switch skipping from error to debug
Merge pull request #5848 from unclejack/resumable_pulls

resume pulling the layer on disconnect
add volumes back to inspect

Docker-DCO-1.1-Signed-off-by: Victor Vieux <vieux@docker.com> (github: vieux)
Merge pull request #6169 from vieux/add_volumes_inspect_back

add volumes back to inspect
Changed all references from Trusted Builds to Automated Builds

* Updated docker images output
* Deprecated docker images -t/--trusted option and replace with --automated
* Changed *trusted variables to *automated
* Changed added support for is_automated alongside deprecated is_trusted
* Updated man pages, docs and completion
* Updated API documentation

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)