GSM-45831
If none of -shardspace/-shardgroup/-shard/-brokerconfig is specified, then the command will act on all broker configs or databases in the catalog.
If the user specifies -shardspace, then the command will only act on the broker configs / shards in that shardspace. Likewise with -shard and -shardgroup.
If the user specifies -shardspace, then the command will only act on the broker configs / shards in that shardspace. Likewise with -shard and -shardgroup.
Cause
GDSCTL help message.