update the sshd example to use just a Dockerfile

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
Remove unused reflink files
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Move proxy into pkg
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Move volumes out of container.go and into volumes.go

This helps clean up the container file and move volumes into
one location.  We currently cannot move volumes to a sub pkg
because they depend on Container and also modify fields on the
container.
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Remove container dependency for links
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Move links to sub pkg
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Add socket activation for go apps
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Use socket activation pkg for listeners
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Integration generic socket wait for docker api
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Change name to listenbuffer
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
change the -H TCP / docker group warning to not reference a resolved issue

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
update warning about local dns resolvers

This changes the local DNS resolver warning to explain what the
warning is about and why the default external DNS server is used.

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)
Remove verbose logging for non errors
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Merge pull request #4155 from crosbymichael/remove-reflink

Remove unused reflink files
Merge pull request #4171 from SvenDowideit/4061-remote-api-warning

change the -H TCP / docker group warning to not reference a resolved issue
Merge pull request #4188 from unclejack/update_dns_resolver_warning

update warning about local dns resolvers
Merge pull request #4153 from crosbymichael/move-proxy

Move proxy into pkg
Move job register into servapi
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Revert "Merge pull request #4151 from crosbymichael/improve-404-client-message"

This reverts commit 6dd1bb9eb08dc144bc172b0052df7c3904896e56, reversing
changes made to 23aec9d7fcaa72db026c042046102b381e2e9d27.

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Improve error message only if no body is returned
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)