Update ZPOPMIN/ZPOPMAX command declaration
Update ZPOPMIN/ZPOPMAX command declaration

Unlike the BZPOP variants, these functions take a single key.  This fixes
an erroneous CROSSSLOT error when passing a count to a cluster enabled
server.

JackieXie168/redis,JackieXie168/redis,JackieXie168/redis,JackieXie168/redis