Slow ee/spec/services/search specs

Description

!53294 (merged) modified three specs which seem to be long running specs:

• ./ee/spec/services/search/global_service_spec.rb
• ./ee/spec/services/search/group_service_spec.rb
• ./ee/spec/services/search/project_service_spec.rb

Details

https://gitlab-org.gitlab.io/rspec_profiling_stats/#overall_time has a lots of details starting at c43b393e on 2021-03-02 for changes in total_queries and total_time.