Update devstack log publisher to use new macro
Update devstack log publisher to use new macro

A new macro for capturing all of devstack's logs, the console log and
documentation has been added so we should use that.

Change-Id: I79047847daaa86c63847aedf5e7e808891ef3812

openstack-infra/project-config,citrix-openstack/project-config,Tesora/tesora-project-config,openstack-infra/project-config,coolsvap/project-config,dongwenjuan/project-config,anbangr/osci-project-config,noorul/os-project-config,citrix-openstack/project-config,Tesora/tesora-project-config,noorul/os-project-config,dongwenjuan/project-config,coolsvap/project-config,anbangr/osci-project-config