Set the current userid when running a report

With nothing specified it defaults to "system". Since we now enforce
checking the ownership of report results, the report results' userid
must be set to the current user instead.

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1479296

app/controllers/api/reports_controller.rb

@@ -17,7 +17,7 @@ def find_reports(id)
 
     def run_resource(type, id, _data)
       report = resource_search(id, type, MiqReport)
-      report_result = MiqReportResult.find(report.queue_generate_table)
+      report_result = MiqReportResult.find(report.queue_generate_table(:userid => User.current_user.userid))
       run_report_result(true,
                         "running report #{report.id}",
                         :task_id          => report_result.miq_task_id,

spec/requests/reports_spec.rb

@@ -215,6 +215,8 @@
         :success => true,
         :message => "running report #{report.id}"
       )
+      actual = MiqReportResult.find(ApplicationRecord.uncompress_id(response.parsed_body["result_id"]))
+      expect(actual.userid).to eq("api_user_id")
     end
 
     it "can schedule a run" do