Merge branch 'release/0.12.20' into develop
Modify cluster-member table
Add alias-attribute in member
Add attributes - ip,port and inet in member-record
Revise generating the ring from node-name to node-alias
add feature enabling leo_manager to take over
DONE - Implement rack-awareness replica placement
Refactor in redundant-manager's worker
Support new attributes with the internal-db
Upgrade mq to 0.12.14
Roll redundant-manager version 0.14.0
Merge branch 'release/0.14.0'