Re-nables rules to not build changes in conf

This reverts commit 6fcfe401.

.gitlab-ci.yml

@@ -71,6 +71,13 @@ aggregate-docs:
         CI_ONIRO_MANIFEST_URL: "$CI_MERGE_REQUEST_SOURCE_PROJECT_URL"
         CI_ONIRO_MANIFEST_BRANCH: "$CI_COMMIT_REF_NAME"
     - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
+      changes:
+        - assets/**/*
+        - flavours/**/*
+        - manifests/*.xml
+        - meta-*/**/*
+        - .oniro-ci/*
+        - .gitlab-ci.yml
       # When building a merge request substitute the CI_ONIRO_MANIFEST_URL to point
       # to the incoming repository, and CI_ONIRO_MANIFEST_BRANCH, to the right
       # branch name. This allows testing the changes coming into project. This