Merge branch 'release/1.0.0-pre1' into develop
Remove unnecessary funs and refactor in the mq
Optimize codes for v1.0.0-pre2
Upgrade libs
Remove duplicate processes
Remove an unused var
Upgrade leo_commons to 0.14.10
Change the key format stored in leo_backend_db
Switch leo_object_storage to develop-branch for the test
Update the default metadata-storage
Fix put-operation during rebalance and delete-operation, which is requested from a remote-storage
Remove hidden-element
Fix inexpected return value
Upgrade libs
Rename the name of mod
Specify the MaxKey in calling prefix_search
Fix bug to handle the new key format in prefix_search
Fix a bug that coudn't handle marker param correctly
Upgrade leo_logger to 0.12.8
Remove whitespaces and remove unncessary codes