Remove Debian jobs

Debian Stretch (the current target of "debian-stable") is no longer
supported by infra.  Remove these jobs.

Change-Id: I42b27b23cb7401d019997a442c47657e732cd472
(cherry picked from commit b97b8d3a61)

zuul.d/integration.yaml

@@ -25,13 +25,6 @@
     parent: puppet-openstack-integration-6-scenario001
     nodeset: centos-8-stream
 
-- job:
-    name: puppet-openstack-integration-6-scenario001-tempest-debian-stable-luminous
-    parent: puppet-openstack-integration-6-scenario001
-    nodeset: debian-stable
-    vars:
-      ceph: luminous
-
 - job:
     name: puppet-openstack-integration-6-scenario002
     parent: puppet-openstack-integration-6
@@ -50,13 +43,6 @@
     parent: puppet-openstack-integration-6-scenario002
     nodeset: centos-8-stream
 
-- job:
-    name: puppet-openstack-integration-6-scenario002-tempest-debian-stable
-    parent: puppet-openstack-integration-6-scenario002
-    nodeset: debian-stable
-    vars:
-      ceph: luminous
-
 - job:
     name: puppet-openstack-integration-6-scenario003
     parent: puppet-openstack-integration-6
@@ -75,13 +61,6 @@
     parent: puppet-openstack-integration-6-scenario003
     nodeset: centos-8-stream
 
-- job:
-    name: puppet-openstack-integration-6-scenario003-tempest-debian-stable
-    parent: puppet-openstack-integration-6-scenario003
-    nodeset: debian-stable
-    vars:
-      ceph: luminous
-
 - job:
     name: puppet-openstack-integration-6-scenario004
     parent: puppet-openstack-integration-6
@@ -100,10 +79,3 @@
     name: puppet-openstack-integration-6-scenario004-tempest-centos-8-stream
     parent: puppet-openstack-integration-6-scenario004
     nodeset: centos-8-stream
-
-- job:
-    name: puppet-openstack-integration-6-scenario004-tempest-debian-stable-luminous
-    parent: puppet-openstack-integration-6-scenario004
-    nodeset: debian-stable
-    vars:
-      ceph: luminous

zuul.d/layout.yaml

@@ -58,12 +58,6 @@
         - puppet-openstack-integration-6-scenario002-tempest-centos-8-stream
         - puppet-openstack-integration-6-scenario003-tempest-centos-8-stream
         - puppet-openstack-integration-6-scenario004-tempest-centos-8-stream
-    experimental:
-      jobs:
-        - puppet-openstack-integration-6-scenario001-tempest-debian-stable-luminous
-        - puppet-openstack-integration-6-scenario002-tempest-debian-stable
-        - puppet-openstack-integration-6-scenario003-tempest-debian-stable
-        - puppet-openstack-integration-6-scenario004-tempest-debian-stable-luminous
 
 - project-template:
     name: puppet-openstack-integration-jobs-scenario001
@@ -74,9 +68,6 @@
     gate:
       jobs:
         - puppet-openstack-integration-6-scenario001-tempest-centos-8-stream
-    experimental:
-      jobs:
-        - puppet-openstack-integration-6-scenario001-tempest-debian-stable-luminous
 
 - project-template:
     name: puppet-openstack-integration-jobs-scenario002
@@ -87,9 +78,6 @@
     gate:
       jobs:
         - puppet-openstack-integration-6-scenario002-tempest-centos-8-stream
-    experimental:
-      jobs:
-        - puppet-openstack-integration-6-scenario002-tempest-debian-stable
 
 - project-template:
     name: puppet-openstack-integration-jobs-scenario003
@@ -100,9 +88,6 @@
     gate:
       jobs:
         - puppet-openstack-integration-6-scenario003-tempest-centos-8-stream
-    experimental:
-      jobs:
-        - puppet-openstack-integration-6-scenario003-tempest-debian-stable
 
 - project-template:
     name: puppet-openstack-integration-jobs-scenario004
@@ -113,6 +98,3 @@
     gate:
       jobs:
         - puppet-openstack-integration-6-scenario004-tempest-centos-8-stream
-    experimental:
-      jobs:
-        - puppet-openstack-integration-6-scenario004-tempest-debian-stable-luminous