use mattdm/fedora in fedora doc and other cosmetic changes

Signed-off-by: Lokesh Mandvekar <lsm5@redhat.com>
yum upgrade on fedora not required before install

Signed-off-by: Lokesh Mandvekar <lsm5@redhat.com>
add unofficial header back, yum update docker

Signed-off-by: Lokesh Mandvekar <lsm5@redhat.com>
separate block for yum update docker

Signed-off-by: Lokesh Mandvekar <lsm5@redhat.com>
specific kernel config
Enable engine to take Stderr and Stdout for mocking in tests
devmapper: add missing defines

Add some missing defines which are needed for compiling on older systems
like RHEL 6.
Merge pull request #3095 from jpoimboe/missing-defines

devmapper: add missing defines
Merge pull request #3079 from crosbymichael/give-engine-noop-tests

Enable engine to take Stderr and Stdout for mocking in tests
Merge pull request #3052 from shawnl/patch-1

nftables dependancies in kernel
Merge pull request #3071 from lsm5/fedora-docs-update

use mattdm/fedora in fedora doc and other cosmetic changes
change the policy wrt $ sudo docker to simplify auto-testing
Merge pull request #3088 from SvenDowideit/start-cmdline-examples-with-dollar-for-easier-testing

change the policy wrt $ sudo docker to simplify auto-testing
Engine: new command 'kill' sends a signal to a running container
Hack: use new 'kill' command in integration tests
gofmt
Engine: port 'kill' to the new integer status.