Used named parameter for refreshing usage data

app/workers/gitlab_usage_ping_worker.rb

@@ -15,7 +15,7 @@ def perform
 
     begin
       HTTParty.post(url,
-                    body: Gitlab::UsageData.to_json(true),
+                    body: Gitlab::UsageData.to_json(force_refresh: true),
                     headers: { 'Content-type' => 'application/json' }
                    )
     rescue HTTParty::Error => e

lib/gitlab/usage_data.rb

 module Gitlab
   class UsageData
     class << self
-      def data(force_refresh = false)
+      def data(force_refresh: false)
         Rails.cache.fetch('usage_data', force: force_refresh, expires_in: 2.weeks) { uncached_data }
       end
 
@@ -9,8 +9,8 @@ def uncached_data
         license_usage_data.merge(system_usage_data)
       end
 
-      def to_json(force_refresh = false)
-        data(force_refresh).to_json
+      def to_json(force_refresh: false)
+        data(force_refresh: force_refresh).to_json
       end
 
       def system_usage_data

spec/workers/gitlab_usage_ping_worker_spec.rb

@@ -8,7 +8,7 @@
 
     stub_request(:post, "https://version.gitlab.com/usage_data").
         to_return(status: 200, body: '', headers: {})
-    expect(Gitlab::UsageData).to receive(:to_json).with(true).and_call_original
+    expect(Gitlab::UsageData).to receive(:to_json).with({ force_refresh: true }).and_call_original
     expect(subject).to receive(:try_obtain_lease).and_return(true)
 
     expect(subject.perform.response.code.to_i).to eq(200)