readyset_query_log_total_cache_misses not being populated

[altmannmarcelo]

Description

Investigate why we are not incrementing readyset_query_log_total_cache_misses counter when we hit a cache miss.

Example of one deployment with two caches:

# TYPE readyset_server_view_query_result_miss counter
0  readyset_server_view_query_result_miss{upstream_db_type="mysql",deployment="readyset.db"} 72611

curl localhost:6034/metrics | grep readyset_query_log_total_cache_misses
# TYPE readyset_query_log_total_cache_misses counter
readyset_query_log_total_cache_misses{upstream_db_type="mysql",deployment="readyset.db",cache_name="q_c6b0f1eb50a321ad"} 0
readyset_query_log_total_cache_misses{upstream_db_type="mysql",deployment="readyset.db",cache_name="q_3695f4f81233b19a"} 0

Change in user-visible behavior

Requires documentation change