fix: improve get-quota api

[flywukong]

Description

prepare a hot fix to fix get-quota comd

Rationale

fix get-quota cmd

Example

wayen@c testnet-test % ./gnfd-cmd bucket get-quota gnfd://dskl1 quota name quota value charged quota: 923799552 remained free quota: 0 consumed charged quota: 81007616 consumed free quota: 1073741824

Changes

Notable changes:

• add each change in a bullet point here
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