Decrease enqueue waiting time for registry migration

This decreases the default and slow enqueue waiting
time for container registry migrations from 1h to
45m and 6h to 165m, respectively.

lib/container_registry/migration.rb

@@ -39,9 +39,9 @@ module ContainerRegistry
 
     def self.enqueue_waiting_time
       return 0 if Feature.enabled?(:container_registry_migration_phase2_enqueue_speed_fast)
-      return 6.hours if Feature.enabled?(:container_registry_migration_phase2_enqueue_speed_slow)
+      return 165.minutes if Feature.enabled?(:container_registry_migration_phase2_enqueue_speed_slow)
 
-      1.hour
+      45.minutes
     end
 
     def self.capacity

spec/lib/container_registry/migration_spec.rb

@@ -37,8 +37,8 @@ RSpec.describe ContainerRegistry::Migration do
     subject { described_class.enqueue_waiting_time }
 
     where(:slow_enabled, :fast_enabled, :expected_result) do
-      false | false | 1.hour
-      true  | false | 6.hours
+      false | false | 45.minutes
+      true  | false | 165.minutes
       false | true  | 0
       true  | true  | 0
     end

spec/workers/container_registry/migration/enqueuer_worker_spec.rb

@@ -141,20 +141,20 @@ RSpec.describe ContainerRegistry::Migration::EnqueuerWorker, :aggregate_failures
 
       with_them do
         before do
-          allow(ContainerRegistry::Migration).to receive(:enqueue_waiting_time).and_return(1.hour)
+          allow(ContainerRegistry::Migration).to receive(:enqueue_waiting_time).and_return(45.minutes)
           create(:container_repository, state, timestamp => 1.minute.ago)
         end
 
         it_behaves_like 'no action' do
           before do
-            expect_log_extra_metadata(waiting_time_passed: false, current_waiting_time_setting: 1.hour)
+            expect_log_extra_metadata(waiting_time_passed: false, current_waiting_time_setting: 45.minutes)
           end
         end
       end
 
       context 'when last completed repository has nil timestamps' do
         before do
-          allow(ContainerRegistry::Migration).to receive(:enqueue_waiting_time).and_return(1.hour)
+          allow(ContainerRegistry::Migration).to receive(:enqueue_waiting_time).and_return(45.minutes)
           create(:container_repository, migration_state: 'import_done')
         end