Spread runner CI minute reset to 8 hours

ee/app/workers/clear_shared_runners_minutes_worker.rb

@@ -10,6 +10,7 @@ class ClearSharedRunnersMinutesWorker # rubocop:disable Scalability/IdempotentWo
   feature_category :continuous_integration
 
   LEASE_TIMEOUT = 3600
+  TIME_SPREAD = 8.hours.seconds.freeze
   BATCH_SIZE = 100_000
 
   def perform
@@ -17,7 +18,7 @@ class ClearSharedRunnersMinutesWorker # rubocop:disable Scalability/IdempotentWo
       start_id = Namespace.minimum(:id)
       last_id = Namespace.maximum(:id)
 
-      execution_offset = 3.hours.seconds / ((last_id - start_id) / BATCH_SIZE)
+      execution_offset = TIME_SPREAD / ((last_id - start_id) / BATCH_SIZE)
 
       (start_id..last_id).step(BATCH_SIZE).with_index do |batch_start_id, batch_index|
         batch_end_id = batch_start_id + BATCH_SIZE - 1

ee/spec/workers/clear_shared_runners_minutes_worker_spec.rb

@@ -147,12 +147,12 @@ RSpec.describe ClearSharedRunnersMinutesWorker do
       end
 
       it 'runs a worker per batch' do
-        # Spread evenly accross 3 hours (10800 seconds)
+        # Spread evenly accross 8 hours (28800 seconds)
         expect(Ci::BatchResetMinutesWorker).to receive(:perform_in).with(0.seconds, 2, 4)
-        expect(Ci::BatchResetMinutesWorker).to receive(:perform_in).with(2700.seconds, 5, 7)
-        expect(Ci::BatchResetMinutesWorker).to receive(:perform_in).with(5400.seconds, 8, 10)
-        expect(Ci::BatchResetMinutesWorker).to receive(:perform_in).with(8100.seconds, 11, 13)
-        expect(Ci::BatchResetMinutesWorker).to receive(:perform_in).with(10800.seconds, 14, 16)
+        expect(Ci::BatchResetMinutesWorker).to receive(:perform_in).with(7200.seconds, 5, 7)
+        expect(Ci::BatchResetMinutesWorker).to receive(:perform_in).with(14400.seconds, 8, 10)
+        expect(Ci::BatchResetMinutesWorker).to receive(:perform_in).with(21600.seconds, 11, 13)
+        expect(Ci::BatchResetMinutesWorker).to receive(:perform_in).with(28800.seconds, 14, 16)
 
         subject
       end