CROSSSLOT keys issue fix when using redis cluster

[naveen-chidhambaram]

Addresses issue #709

• Intentionally did not write test as we will need to set up Redis cluster in spec/spec_helper.rb based on the compatible redis gem version.

[andrehjr]

It would be awesome to add an spec for this. If you want to add one later, that would be cool :) I might add one later. Sorry for taking too long!

The push/renames look good to me.

with redis-namespace:

1690243266.694866 [0 [::1]:57123] "MULTI"
1690243266.694891 [0 [::1]:57123] "rpush" "ns:some_list_tmp{ns:some_list}" "1" "2" "3"
1690243266.694915 [0 [::1]:57123] "rename" "ns:some_list_tmp{ns:some_list}" "ns:some_list"
1690243266.694925 [0 [::1]:57123] "EXEC"

without redis-namespace

1690243327.047441 [0 [::1]:57144] "MULTI"
1690243327.047461 [0 [::1]:57144] "rpush" "some_list_tmp{some_list}" "1" "2" "3"
1690243327.047469 [0 [::1]:57144] "rename" "some_list_tmp{some_list}" "some_list"
1690243327.047479 [0 [::1]:57144] "EXEC