[api] add get update link api
[api] add get update link api

miurahr/seahub,madflow/seahub,Chilledheart/seahub,madflow/seahub,Chilledheart/seahub,miurahr/seahub,cloudcopy/seahub,madflow/seahub,cloudcopy/seahub,miurahr/seahub,Chilledheart/seahub,miurahr/seahub,cloudcopy/seahub,Chilledheart/seahub,madflow/seahub,Chilledheart/seahub,madflow/seahub,cloudcopy/seahub