Update fish completions for docker master.

Docker-DCO-1.1-Signed-off-by: Barnaby Gray <barnaby@pickle.me.uk> (github: barnybug)
Make sure to set error reguardless of attach or stdin

Fixes #3364
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
fix import display

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
add test

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
Merge pull request #4927 from crosbymichael/start-hang

Make sure to set error reguardless of attach or stdin
Merge pull request #4881 from barnybug/fish-completions

Update fish completions for docker 0.9.1
Merge pull request #4930 from vieux/fix_regression_import

Fix regression import