fix(images): change zed branch name (#1225)

zed is unmaintained and the branch name changed from stable/zed to unmaintained/zed
diff --git a/images/glance/Dockerfile b/images/glance/Dockerfile
index 3e1756c..1e2c5d6 100644
--- a/images/glance/Dockerfile
+++ b/images/glance/Dockerfile
@@ -18,7 +18,7 @@
 ARG GLANCE_GIT_REF=06a18202ab52c64803f044b8f848ed1c160905d2
 ADD --keep-git-dir=true https://opendev.org/openstack/glance.git#${GLANCE_GIT_REF} /src/glance
 RUN git -C /src/glance fetch --unshallow
-ADD --keep-git-dir=true https://opendev.org/openstack/glance_store.git#stable/zed /src/glance_store
+ADD --keep-git-dir=true https://opendev.org/openstack/glance_store.git#unmaintained/zed /src/glance_store
 RUN git -C /src/glance_store fetch --unshallow
 COPY patches/glance_store /patches/glance_store
 RUN git -C /src/glance_store apply --verbose /patches/glance_store/*
diff --git a/images/horizon/Dockerfile b/images/horizon/Dockerfile
index c119e11..21816a5 100644
--- a/images/horizon/Dockerfile
+++ b/images/horizon/Dockerfile
@@ -18,21 +18,21 @@
 ARG HORIZON_GIT_REF=5de40f9b222608d35c5a0919117259e966217a86
 ADD --keep-git-dir=true https://opendev.org/openstack/horizon.git#${HORIZON_GIT_REF} /src/horizon
 RUN git -C /src/horizon fetch --unshallow
-ADD --keep-git-dir=true https://opendev.org/openstack/designate-dashboard.git#stable/zed /src/designate-dashboard
+ADD --keep-git-dir=true https://opendev.org/openstack/designate-dashboard.git#unmaintained/zed /src/designate-dashboard
 RUN git -C /src/designate-dashboard fetch --unshallow
-ADD --keep-git-dir=true https://opendev.org/openstack/heat-dashboard.git#stable/zed /src/heat-dashboard
+ADD --keep-git-dir=true https://opendev.org/openstack/heat-dashboard.git#unmaintained/zed /src/heat-dashboard
 RUN git -C /src/heat-dashboard fetch --unshallow
-ADD --keep-git-dir=true https://opendev.org/openstack/ironic-ui.git#stable/zed /src/ironic-ui
+ADD --keep-git-dir=true https://opendev.org/openstack/ironic-ui.git#unmaintained/zed /src/ironic-ui
 RUN git -C /src/ironic-ui fetch --unshallow
-ADD --keep-git-dir=true https://opendev.org/openstack/magnum-ui.git#stable/zed /src/magnum-ui
+ADD --keep-git-dir=true https://opendev.org/openstack/magnum-ui.git#unmaintained/zed /src/magnum-ui
 RUN git -C /src/magnum-ui fetch --unshallow
-ADD --keep-git-dir=true https://opendev.org/openstack/manila-ui.git#stable/zed /src/manila-ui
+ADD --keep-git-dir=true https://opendev.org/openstack/manila-ui.git#unmaintained/zed /src/manila-ui
 RUN git -C /src/manila-ui fetch --unshallow
-ADD --keep-git-dir=true https://opendev.org/openstack/neutron-vpnaas-dashboard.git#stable/zed /src/neutron-vpnaas-dashboard
+ADD --keep-git-dir=true https://opendev.org/openstack/neutron-vpnaas-dashboard.git#unmaintained/zed /src/neutron-vpnaas-dashboard
 RUN git -C /src/neutron-vpnaas-dashboard fetch --unshallow
-ADD --keep-git-dir=true https://opendev.org/openstack/octavia-dashboard.git#stable/zed /src/octavia-dashboard
+ADD --keep-git-dir=true https://opendev.org/openstack/octavia-dashboard.git#unmaintained/zed /src/octavia-dashboard
 RUN git -C /src/octavia-dashboard fetch --unshallow
-ADD --keep-git-dir=true https://opendev.org/openstack/senlin-dashboard.git#stable/zed /src/senlin-dashboard
+ADD --keep-git-dir=true https://opendev.org/openstack/senlin-dashboard.git#unmaintained/zed /src/senlin-dashboard
 RUN git -C /src/senlin-dashboard fetch --unshallow
 COPY patches/horizon /patches/horizon
 RUN git -C /src/horizon apply --verbose /patches/horizon/*
diff --git a/images/neutron/Dockerfile b/images/neutron/Dockerfile
index 38b3d72..6d52763 100644
--- a/images/neutron/Dockerfile
+++ b/images/neutron/Dockerfile
@@ -18,7 +18,7 @@
 ARG NEUTRON_GIT_REF=ca25eb96f16dbe5ff1ca4446534f9a1d12fa7035
 ADD --keep-git-dir=true https://opendev.org/openstack/neutron.git#${NEUTRON_GIT_REF} /src/neutron
 RUN git -C /src/neutron fetch --unshallow
-ADD --keep-git-dir=true https://opendev.org/openstack/neutron-vpnaas.git#stable/zed /src/neutron-vpnaas
+ADD --keep-git-dir=true https://opendev.org/openstack/neutron-vpnaas.git#unmaintained/zed /src/neutron-vpnaas
 RUN git -C /src/neutron-vpnaas fetch --unshallow
 COPY patches/neutron /patches/neutron
 RUN git -C /src/neutron apply --verbose /patches/neutron/*
diff --git a/images/octavia/Dockerfile b/images/octavia/Dockerfile
index 688ce28..583dc4a 100644
--- a/images/octavia/Dockerfile
+++ b/images/octavia/Dockerfile
@@ -18,7 +18,7 @@
 ARG OCTAVIA_GIT_REF=000b577f3e9c9ff7cb893e9f6e635753017a78c6
 ADD --keep-git-dir=true https://opendev.org/openstack/octavia.git#${OCTAVIA_GIT_REF} /src/octavia
 RUN git -C /src/octavia fetch --unshallow
-ADD --keep-git-dir=true https://opendev.org/openstack/ovn-octavia-provider.git#stable/zed /src/ovn-octavia-provider
+ADD --keep-git-dir=true https://opendev.org/openstack/ovn-octavia-provider.git#unmaintained/zed /src/ovn-octavia-provider
 RUN git -C /src/ovn-octavia-provider fetch --unshallow
 RUN --mount=type=cache,mode=0755,target=/root/.cache/pip,sharing=private <<EOF bash -xe
 pip3 install \