Fix hash-max-zipmap-entries and hash-max-zipmap-value defaults

While working to make the config compatible with v2.6, I noticed that the defaults for hash-max-zipmap-entries and hash-max-zipmap-value are flipped.

These directives have been renamed in the latest version of redis, but you can reference what the last default values were here: https://github.com/antirez/redis/commit/d3ea4c86a8c8efb2ab922db89af915833e437e7e