Make Geo::BaseSyncService#lease_key public

app/services/geo/base_sync_service.rb

@@ -21,6 +21,10 @@ module Geo
       end
     end
 
+    def lease_key
+      @lease_key ||= "#{LEASE_KEY_PREFIX}:#{type}:#{project.id}"
+    end
+
     private
 
     def registry
@@ -64,10 +68,6 @@ module Geo
       registry.update!(attrs)
     end
 
-    def lease_key
-      @lease_key ||= "#{LEASE_KEY_PREFIX}:#{type}:#{project.id}"
-    end
-
     def type
       self.class.type
     end

spec/services/geo/repository_sync_service_spec.rb

@@ -8,7 +8,7 @@ RSpec.describe Geo::RepositorySyncService, services: true do
 
   before do
     allow(Gitlab::ExclusiveLease).to receive(:new)
-      .with(subject.__send__(:lease_key), anything)
+      .with(subject.lease_key, anything)
       .and_return(lease)
 
     allow_any_instance_of(Repository).to receive(:fetch_geo_mirror)

spec/services/geo/wiki_sync_service_spec.rb

@@ -8,7 +8,7 @@ RSpec.describe Geo::WikiSyncService, services: true do
 
   before do
     allow(Gitlab::ExclusiveLease).to receive(:new)
-      .with(subject.__send__(:lease_key), anything)
+      .with(subject.lease_key, anything)
       .and_return(lease)
 
     allow_any_instance_of(Repository).to receive(:fetch_geo_mirror)