feat: allow migrations ome at the moment and only on default branch

.gitlab-ci.yml

@@ -5,12 +5,14 @@ image: registry.gitlab.ics.muni.cz:443/cloud/g2/common-cloud-entities:1.0.2
 
 ostack-project-migration:
   stage: migration
+  resource_group: migration
   before_script:
   - python3 -m pip install -r ci/requirements.pip > pymodules-install.log
   script:
   - ci/project-migrator.py --source-openrc="${SRC_CLOUD_OSTACK_RC_FILE}" --destination-openrc="${DST_CLOUD_OSTACK_RC_FILE}" --project-name="${PROJECT_NAME}" --validation-a-source-server-id="${VALIDATION_SERVER_ID}" --ceph-migrator-sshkeyfile="${MIGRATOR_SSH_KEY_FILE}" --explicit-server-names="${MIGRATE_EXPLICIT_SERVER_NAMES}"
   rules:
-  - when: manual
+  - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+    when: manual
   artifacts:
     expire_in: 1 mo
     when: always