Add new scenario jobs for distributed dhcp

Those new jobs are based on the openvswitch and
openvswitch-iptables_hybrid job. The only difference in those new jobs
is disabled DHCP agent and enabled distributed dhcp L2 extension.

New jobs are added to the experimental queue for now. We can discuss
later if we should add them to the check/gate queues later.

Depends-On: https://review.opendev.org/c/openstack/neutron/+/803469
Change-Id: I28c1cec324046df5b062e1b9d991ca7413c075fc

zuul.d/master_jobs.yaml

@@ -274,6 +274,34 @@
       - ^neutron/plugins/ml2/drivers/mech_sriov/.*$
       - ^neutron/plugins/ml2/drivers/ovn/.*$
 
+- job:
+    name: neutron-tempest-plugin-scenario-openvswitch-distributed-dhcp
+    parent: neutron-tempest-plugin-scenario-openvswitch
+    timeout: 10000
+    vars:
+      # NOTE: DHCP extra options and dns services aren't supported with
+      # distributed DHCP L2 agent extension
+      tempest_exclude_regex: "\
+          (^neutron_tempest_plugin.scenario.test_dhcp.DHCPTest.test_extra_dhcp_opts)|\
+          (^neutron_tempest_plugin.scenario.test_internal_dns.InternalDNSTest.test_dns_domain_and_name)"
+      devstack_services:
+        q-dhcp: false
+        q-distributed-dhcp: true
+
+- job:
+    name: neutron-tempest-plugin-scenario-openvswitch-iptables_hybrid-distributed-dhcp
+    parent: neutron-tempest-plugin-scenario-openvswitch-iptables_hybrid
+    timeout: 10000
+    vars:
+      # NOTE: DHCP extra options and dns services aren't supported with
+      # distributed DHCP L2 agent extension
+      tempest_exclude_regex: "\
+          (^neutron_tempest_plugin.scenario.test_dhcp.DHCPTest.test_extra_dhcp_opts)|\
+          (^neutron_tempest_plugin.scenario.test_internal_dns.InternalDNSTest.test_dns_domain_and_name)"
+      devstack_services:
+        q-dhcp: false
+        q-distributed-dhcp: true
+
 - job:
     name: neutron-tempest-plugin-scenario-linuxbridge
     parent: neutron-tempest-plugin-scenario

zuul.d/project.yaml

@@ -20,6 +20,8 @@
     experimental:
       jobs:
         - neutron-tempest-plugin-dvr-multinode-scenario
+        - neutron-tempest-plugin-scenario-openvswitch-distributed-dhcp
+        - neutron-tempest-plugin-scenario-openvswitch-iptables_hybrid-distributed-dhcp
 
 
 - project-template: