Fix ambiguous stuck ci job worker's spec. Rename lease key of archive

lib/gitlab/ci/trace.rb

@@ -215,7 +215,7 @@ module Gitlab
 
       # For ExclusiveLeaseGuard concerns
       def lease_key
-        @lease_key ||= self.class.name.underscore + ":archive:#{job.id}"
+        @lease_key ||= "trace:archive:#{job.id}"
       end
 
       # For ExclusiveLeaseGuard concern

spec/workers/stuck_ci_jobs_worker_spec.rb

@@ -132,8 +132,10 @@ describe StuckCiJobsWorker do
     end
 
     it 'cancels exclusive lease after worker perform' do
-      expect(Gitlab::ExclusiveLease).to receive(:cancel).with(described_class::EXCLUSIVE_LEASE_KEY, exclusive_lease_uuid)
       worker.perform
+
+      expect(Gitlab::ExclusiveLease.new(described_class::EXCLUSIVE_LEASE_KEY, timeout: 1.hour).exists?)
+        .to be_falsy
     end
   end
 end