Sort known issues by priority

Signed-off-by: Crola1702 <cristobal.arroyo@ekumenlabs.com>

database/scripts/lib/buildfarm_tools.rb

@@ -131,7 +131,7 @@ def self.jobs_last_success_date(older_than_days: 0)
     out
   end
 
-  def self.test_regressions_known
+  def self.test_regressions_known(sort_by: 'priority')
     out = known_issues(status: 'open')
     out.concat known_issues(status: 'disabled')
     out = out.group_by { |e| e["github_issue"] }.to_a.map { |e| e[1] }
@@ -141,6 +141,10 @@ def self.test_regressions_known
         error["priority"] = priority
       end
     end
+
+    unless sort_by.nil?
+      out.sort_by! { |r| -r.first['priority'] }
+    end
     out
   end