Fixing CAS for Dalli adapter

[glebglazov]

When setting up test suite with values from docs (namely TTL option of Dalli client), fetch_multi method stops populating cache because params ordering that Dalli client expects is different from ordering that is used when calling replace_cas method:

identity_cache/lib/identity_cache/mem_cache_store_cas.rb

Line 47 in 721e1bb

@data.replace_cas(key, payload, options[:expires_in].to_i, cas_id, options)

https://github.com/petergoldstein/dalli/blob/e9afa45c5f8a134c4a7ca853530eb0ff8aeb3e01/lib/dalli/client.rb#L295