Use explicit provides/requires for container jobs

Rather than rely on the implicit docker-image provides/requires
list explicit per-image requirements for related jobs to reduce,
unecessarily serialization in change queues.

Depends-On: https://review.opendev.org/711119
Change-Id: Ie6b033652833bee84d2954b02a9014061756352f

.zuul.yaml

@@ -27,6 +27,10 @@
     parent: opendev-build-docker-image
     dependencies: opendev-buildset-registry
     description: Build OpenDev Docker images for storyboard
+    requires:
+      - python-base-container-image
+      - python-builder-container-image
+    provides: storyboard-container-image
     vars: &storyboard_opendev_image_vars
       zuul_work_dir: src/opendev.org/opendev/storyboard
       docker_images:
@@ -56,6 +60,10 @@
     name: storyboard-upload-opendev-image
     parent: opendev-upload-docker-image
     description: Build OpenDev storyboard Docker images and upload to Docker Hub.
+    requires:
+      - python-base-container-image
+      - python-builder-container-image
+    provides: storyboard-container-image
     vars: *storyboard_opendev_image_vars
     secrets:
       - name: docker_credentials