CI: make Debian source jobs voting

We have Debian support for quite a while. While binary target is not
always up-to-date (due to Debian OpenStack team policy of building only
released code, not git snapshots) source images are expected to just
work.

Change-Id: I2ed6061054bcea12d5b38974ee691e9632d32f05

zuul.d/jobs.yaml

@@ -21,7 +21,6 @@
     name: kolla-ansible-debian-source
     parent: kolla-ansible-base
     nodeset: kolla-ansible-debian-bullseye
-    voting: false
     vars:
       base_distro: debian
       install_type: source
@@ -136,7 +135,6 @@
     parent: kolla-ansible-base
     nodeset: kolla-ansible-debian-bullseye
     timeout: 9000
-    voting: false
     vars:
       base_distro: debian
       install_type: source

zuul.d/project.yaml

@@ -62,6 +62,8 @@
       jobs:
         - kolla-ansible-centos8s-source
         - kolla-ansible-centos8s-source-upgrade
+        - kolla-ansible-debian-source
+        - kolla-ansible-debian-source-upgrade
         - kolla-ansible-ubuntu-source
         - kolla-ansible-ubuntu-source-upgrade
     experimental: