Add release tarball generation to swift3
Add release tarball generation to swift3

Closes-Bug: #1561790

Change-Id: Ic6bc621238c2b9c1267f2cbd1dda6d5575d2084d

Tesora/tesora-project-config,dongwenjuan/project-config,Tesora/tesora-project-config,dongwenjuan/project-config,openstack-infra/project-config,openstack-infra/project-config