Merge branch 'qa/gb/improve-multi-project-pipeline-omnibus-script' into 'master'

Do not raise when downstream pipeline is created

Closes #40987

See merge request gitlab-org/gitlab-ce!15837

scripts/trigger-build-omnibus

@@ -66,7 +66,7 @@ module Omnibus
         raise 'Pipeline timeout!' if timeout?
 
         case status
-        when :pending, :running
+        when :created, :pending, :running
           puts "Waiting another #{INTERVAL} seconds ..."
           sleep INTERVAL
         when :success