[Streaming] Health lookups are not case-insensitive with Streaming enabled

[pierresouchay]

Lookups in health are not case insensitive

Overview of the Issue

When doing some lookups on services, Consul is case sensitive when streaming is enabled

Reproduction Steps

Compare the output of those commands with Consul with streaming and without.

With streaming, lookups on health are not case insensitive, especially annoying for DNS.

To run Consul with streaming

consul agent -dev -hcl 'rpc{enable_streaming=true}' -hcl use_streaming_backend=true -hcl 'dns_config{ allow_stale=true, max_stale="3h", use_cache=true, "cache_max_age"="3h"}'

Test that should return 1 entry (notice the ConsuL case):

curl -fs --get "localhost:8500/v1/health/service/ConsuL?index=13&wait=5s&"
[]

=> BAD, should return 1 entry