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
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