ci/build-generic.yaml: Use the migrated to Eclipse manifest repo

The repository holding the repo manifests is now under Eclipse
infrastructure.

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

.oniro-ci/build-generic.yaml

@@ -9,7 +9,7 @@
   tags: [large-disk, $CI_ONIRO_RUNNER_TAG, $CI_ONIRO_INSTANCE_SIZE]
   variables:
     CI_ONIRO_RUNNER_TAG : ""
-    CI_ONIRO_MANIFEST_URL: https://booting.oniroproject.org/distro/oniro
+    CI_ONIRO_MANIFEST_URL: https://gitlab.eclipse.org/eclipse/oniro-core/oniro
     CI_ONIRO_MANIFEST_BRANCH: dunfell
     CI_ONIRO_MANIFEST_NAME: default.xml
     CI_ONIRO_MANIFEST_MIRROR: oniro-develop