[charts/redis-ha] fix(redis-ha): check_if_redis_is_master failing on QUIT

[agaudreault]

What this PR does / why we need it:

Which issue this PR fixes

• fixes #217

Special notes for your reviewer:

Using this I get the following

sum by (container, pod, proxy) (haproxy_backend_active_servers)

{container="haproxy", proxy="bk_redis_master"} | 1
{container="haproxy", proxy="check_if_redis_is_master_0"} | 0
{container="haproxy", proxy="check_if_redis_is_master_1"} | 0
{container="haproxy", proxy="check_if_redis_is_master_2"} | 3
{container="haproxy", proxy="health_check_http_url"} | 0

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• [x] DCO signed
• [x] Chart Version bumped
• [x] Variables are documented in the README.md
• [x] Title of the PR starts with chart name (e.g. [stable/mychartname])