SearchIT should be disabled as it is only ever either a flake, or a false negative
SearchIT performs what appears to be a pretty basic search, but the CQClient.searchInPages() method that it calls relies on the long-deprecated com.day.cq.wcm.core.impl.servlets.FindReplaceServlet, which constructs an XPath query that is not optimized to leverage any product index definitions (no nodetype predicate, leading wildcard for the jcr:like expression, etc.).
It turns out that during the Cloud Manager Product Tests phase, successful execution of this test actually depends on the query engine choosing traversal, because an nt:base index definition scoped to the entire repository takes too long to update for the product test page creation to be reflected in the index before the test timeout.
This issue represents a frequent blocker for deploying product upgrades to some customers who have deployed an nt:base index definition, and it should simply be disabled as it does not truly demonstrate that supported product behavior is working.