ci: Update for changes in CI template

This updates things based on changes in the templates that we use. Also
pins the ref in the template repo so that our build does not break when
the template parameters change.

This does mean that we should likely periodically check the ci-templates
repo, but this seems to be better than the build breaking unexpectedly.

.gitlab-ci.yml

@@ -18,24 +18,26 @@ variables:
   # Update this tag when you want to trigger a rebuild the container in which
   # CI runs, for example when adding new packages to UBUNTU_DEBS. The tag is
   # an arbitrary string that identifies the exact container contents.
-  UBUNTU_TAG: '2019-11-21-01'
-  UBUNTU_VERSION: '18.04'
-  UBUNTU_IMAGE: "$CI_REGISTRY_IMAGE/ubuntu/$UBUNTU_VERSION:$UBUNTU_TAG"
+  FDO_DISTRIBUTION_TAG: '2020-03-06-01'
+  FDO_DISTRIBUTION_VERSION: '18.04'
+  FDO_UPSTREAM_REPO: 'pulseaudio/pulseaudio'
+  UBUNTU_IMAGE: "$CI_REGISTRY_IMAGE/ubuntu/$FDO_DISTRIBUTION_VERSION:$FDO_DISTRIBUTION_TAG"
 
 include:
   - project: 'wayland/ci-templates'
-    ref: master
+    ref: 'df52af2195b052325daf5d715c88be90f8ec7d86'
     file: '/templates/ubuntu.yml'
 
 build-container:
-  extends: .ubuntu@container-ifnot-exists
+  extends: .fdo.container-ifnot-exists@ubuntu
   stage: container
   variables:
     GIT_STRATEGY: none # no need to pull the whole tree for rebuilding the image
 
-    # Remember to update UBUNTU_TAG when modifying this package list! Otherwise
-    # the changes won't have effect since an old container image will be used.
-    UBUNTU_DEBS: >-
+    # Remember to update FDO_DISTRIBUTION_TAG when modifying this package list!
+    # Otherwise the changes won't have effect since an old container image will
+    # be used.
+    FDO_DISTRIBUTION_PACKAGES: >-
       autoconf
       automake
       autopoint