Whitelist query limits for internal API

When creating a merge request for push options, there may be over 100
queries that are run to create a merge request. Even after we reduce the
number of queries by disabling the Sidekiq jobs, it appears we still
hover near this limit.

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/11450

lib/api/internal.rb

@@ -265,6 +265,8 @@ module API
           params[:changes], push_options.as_json)
 
         if Feature.enabled?(:mr_push_options, default_enabled: true)
+          Gitlab::QueryLimiting.whitelist('https://gitlab.com/gitlab-org/gitlab-ce/issues/61359')
+
           mr_options = push_options.get(:merge_request)
           output.merge!(process_mr_push_options(mr_options, project, user, params[:changes])) if mr_options.present?
         end

spec/requests/api/internal_spec.rb

@@ -959,7 +959,9 @@ describe API::Internal do
 
       it 'creates a new merge request' do
         expect do
+          Sidekiq::Testing.fake! do
             post api('/internal/post_receive'), params: valid_params
+          end
         end.to change { MergeRequest.count }.by(1)
       end