Update the hound image to bullseye

Just some spring cleaning now that bullseye has released.

Change-Id: I1202400932860a04841d376b9f10beb89acc175c

docker/hound/Dockerfile

@@ -12,7 +12,7 @@
 # implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM docker.io/opendevorg/python-base:3.8
+FROM docker.io/opendevorg/python-base:3.9-bullseye
 
 ENV GOPATH /go
 

zuul.d/docker-images/hound.yaml

@@ -2,6 +2,7 @@
 - job:
     name: system-config-build-image-hound
     description: Build a hound image.
+    requires: python-base-3.9-bullseye-container-image
     provides: hound-container-image
     parent: system-config-build-image
     vars: &hound_vars
@@ -14,6 +15,7 @@
 - job:
     name: system-config-upload-image-hound
     description: Build and upload a hound image.
+    requires: python-base-3.9-bullseye-container-image
     provides: hound-container-image
     parent: system-config-upload-image
     vars: *hound_vars

zuul.d/project.yaml

@@ -111,7 +111,7 @@
         - system-config-build-image-hound:
             dependencies:
               - name: opendev-buildset-registry
-              - name: system-config-build-image-python-base-3.8
+              - name: system-config-build-image-python-base-3.9-bullseye
                 soft: true
         - system-config-build-image-etherpad
         - system-config-build-image-gitea: