ZUNIONSTORE and ZINTERSTORE need to work with regular sets as inputs

Some of the Redis TCL tests fail when running against Geode due to ZUNIONSTORE and ZINTERSTORE taking regular sets (as opposed to sorted sets) as input. Geode returns the error "WRONGTYPE Operation against a key holding the wrong kind of value" when native Redis succeeds.

The tests include:

• ZUNIONSTORE with a regular set and weights
• ZINTERSTORE with a regular set and weights
• ZINTERSTORE regression with two sets, intset+hashtable
• ZINTERSTORE #516 regression, mixed sets and ziplist zsets

Enable these tests as part of this fix.