Set sha256 checksum when archiving traces

lib/gitlab/ci/trace.rb

@@ -137,7 +137,8 @@ module Gitlab
           job.create_job_artifacts_trace!(
             project: job.project,
             file_type: :trace,
-            file: stream)
+            file: stream,
+            file_sha256: Digest::SHA256.file(path).hexdigest)
         end
       end
 

spec/lib/gitlab/ci/trace_spec.rb

@@ -414,6 +414,7 @@ describe Gitlab::Ci::Trace do
         expect(File.exist?(src_path)).to be_falsy
         expect(src_checksum)
           .to eq(Digest::SHA256.file(build.job_artifacts_trace.file.path).digest)
+        expect(build.job_artifacts_trace.file_sha256).to eq(src_checksum)
       end
     end
 
@@ -439,6 +440,7 @@ describe Gitlab::Ci::Trace do
         expect(build.old_trace).to be_nil
         expect(src_checksum)
           .to eq(Digest::SHA256.file(build.job_artifacts_trace.file.path).digest)
+        expect(build.job_artifacts_trace.file_sha256).to eq(src_checksum)
       end
     end