Ensure Elasticsearch index is clean before wildcard test
!104311 (merged) caused Elasticsearch indices to be reused during tests, but this caused a test failure when previous tests ran before the wildcard test. The wildcard test would pick up on older projects.
To fix this, we use the :elastic_clean
tag to ensure the test
environment contains only a single project.
Relates to #387496 (closed)
Edited by Stan Hu