Add tests for remote buckets handlers (#2843)

.github/workflows/jobs.yaml

@@ -1298,7 +1298,7 @@ jobs:
           go tool cover -func=all.out | grep total > tmp2
           result=`cat tmp2 | awk 'END {print $3}'`
           result=${result%\%}
-          threshold=69.4
+          threshold=71.4
           echo "Result:"
           echo "$result%"
           if (( $(echo "$result >= $threshold" |bc -l) )); then