add list schema
Merge remote-tracking branch 'origin/v0.2' into zjw
rpc of equiproom and geolocation and nodeassignment
test
Test file create/close/rep/delete APIs, passed! Modify JDBC for user authentication; Fix SFile convertion NullPointer bug.
Merge remote-tracking branch 'origin/zjw' into v0.2, for list schema.
Fix unimplement RPC: find_best_nodes_in_groups.
modify geolocname
modify geolocname ++
Merge remote-tracking branch 'origin/zhuqihan' into v0.2, OK.
Remove metastore_db.
Merge remote-tracking branch 'origin/zhuqihan' into v0.2, add missing files.
Merge caoruyi's branch: remove geolocname.