Broken master due to static-analysis
As seen in https://gitlab.com/gitlab-org/gitlab-ee/-/jobs/147144292:
/builds/gitlab-org/gitlab-ee/lib/gitlab/utils/override.rb:44:in `verify_method!': Import::GithubController#extra_project_attrs doesn't exist! (NotImplementedError)
from /builds/gitlab-org/gitlab-ee/lib/gitlab/utils/override.rb:30:in `block (2 levels) in verify!'
from /builds/gitlab-org/gitlab-ee/lib/gitlab/utils/override.rb:29:in `each_pair'
from /builds/gitlab-org/gitlab-ee/lib/gitlab/utils/override.rb:29:in `block in verify!'
from /builds/gitlab-org/gitlab-ee/lib/gitlab/utils/override.rb:26:in `each'
from /builds/gitlab-org/gitlab-ee/lib/gitlab/utils/override.rb:26:in `verify!'
from /builds/gitlab-org/gitlab-ee/lib/gitlab/utils/override.rb:170:in `each'
from /builds/gitlab-org/gitlab-ee/lib/gitlab/utils/override.rb:170:in `verify!'
from /builds/gitlab-org/gitlab-ee/lib/tasks/lint.rake:12:in `block (2 levels) in <main>'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `block in execute'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `each'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `execute'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/task.rb:214:in `block in invoke_with_call_chain'
from /usr/local/lib/ruby/2.5.0/monitor.rb:226:in `mon_synchronize'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/task.rb:194:in `invoke_with_call_chain'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/task.rb:183:in `invoke'
from /builds/gitlab-org/gitlab-ee/lib/tasks/lint.rake:50:in `block (4 levels) in <main>'
from /builds/gitlab-org/gitlab-ee/lib/tasks/lint.rake:41:in `fork'
from /builds/gitlab-org/gitlab-ee/lib/tasks/lint.rake:41:in `block (3 levels) in <main>'
from /builds/gitlab-org/gitlab-ee/lib/tasks/lint.rake:40:in `each'
from /builds/gitlab-org/gitlab-ee/lib/tasks/lint.rake:40:in `block (2 levels) in <main>'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `block in execute'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `each'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `execute'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/task.rb:214:in `block in invoke_with_call_chain'
from /usr/local/lib/ruby/2.5.0/monitor.rb:226:in `mon_synchronize'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/task.rb:194:in `invoke_with_call_chain'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/task.rb:183:in `invoke'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/application.rb:160:in `invoke_task'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/application.rb:116:in `block (2 levels) in top_level'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/application.rb:116:in `each'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/application.rb:116:in `block in top_level'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/application.rb:125:in `run_with_threads'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/application.rb:110:in `top_level'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/application.rb:83:in `block in run'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/application.rb:186:in `standard_exception_handling'
from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.5.0/gems/rake-12.3.2/lib/rake/application.rb:80:in `run'
from bin/rake:4:in `<main>'