Set HTTP upgrade headers when hijacking connection

Signed-off-by: Jean-Tiare Le Bigot <jt@yadutaf.fr>
Set HTTP upgrade header only when requested by client

Signed-off-by: Jean-Tiare Le Bigot <jt@yadutaf.fr>
Update connection hijacking documentation with HTTP Upgrade Headers

Signed-off-by: Jean-Tiare Le Bigot <jt@yadutaf.fr>
Remove DCO small patch exception

As we move forward on automating our pull request review process and
tooling these exceptions hurt more than they help.  For consistency we
should not allow small patch exceptions for anything.  The source of
truth going forward for DCO and builds are the official drone status on
each pull request.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Remove small patch exception checking in hack/make/validate-dco

Signed-off-by: Andrew Page <admwiggin@gmail.com>
Give maintainers the power to add contributor's DCO to a commit message, or to use their own if its a trvial change

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>
Merge pull request #9652 from yadutaf/master

Set HTTP upgrade headers when hijacking connection
Chnage LookupRemoteImage to return error
This commit is patch for following comment
// TODO: This method should return the errors instead of masking them and returning false

Signed-off-by: Daehyeok Mun <daehyeok@gmail.com>
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Merge pull request #9083 from SvenDowideit/pr_out_remove_small_patch_exception_checking_in_hack_make_validate_dco

Remove small patch exception checking in hack/make/validate-dco
Merge pull request #9701 from crosbymichael/registry-lookup-image

Change LookupRemoteImage to return error