This change reworks the registry-token-server package spec with
go dependencies downloaded at mirror-download time, rather than
at build time. The dependencies (at fixed revisions) are
extracted into the package's build tree for compilation.
Story: 2002840
Task: 22783
Depends-On: https://review.openstack.org/#/c/631001/
Change-Id: Ib7d745c6469beacf029195c3e6eaa4935f398483
Signed-off-by: Jerry Sun <jerry.sun@windriver.com>
Signed-off-by: Jason McKenna <jason.mckenna@windriver.com>