Added "Github Submodules" section to Automated Builds doc.

Signed-off-by: Hollie Teal <hollie.teal@docker.com>
Made requested changes (capitalization)
Move "info" to daemon/info.go

Signed-off-by: Solomon Hykes <solomon@docker.com>
Updated openSUSE's installation instructions

Cover network configuration and reference the official openSUSE image
inside of the examples.

Docker-DCO-1.1-Signed-off-by: Flavio Castelli <fcastelli@suse.com> (github: flavio)
Merge pull request #7479 from shykes/cleanup-server-info

Cleanup: move "info" to daemon/info.go
Merge pull request #7465 from flavio/update-opensuse-doc

Updated openSUSE's installation instructions
Merge pull request #7406 from hollietealok/docs_add

Added "Github Submodules" section to Automated Builds doc.
fix parsing of hostnames when we actually want IP addresses.

Docker-DCO-1.1-Signed-off-by: Erik Hollensbe <github@hollensbe.org> (github: erikh)
First stab at nat tests.

Docker-DCO-1.1-Signed-off-by: Erik Hollensbe <github@hollensbe.org> (github: erikh)