Gitlab pods unable to authenticate with remote redis-sentinel

When using a remote deployment of HA Redis-sentinel (deployed in same k8s cluster within a namespace called redis) from here, the dependencies container within webservice and sidekiq fails to authenticate to the remote redis-sentinel cluster.

Here's my values for bigbang under gitlab:

    values:
      global:
        redis:
          password:
            enabled: true
            secret: "gitlab-redis-secret"
            key: "secret"
          host: mymaster
          serviceName: redis
          port: 26379
          sentinels:
            - host: redis-node-0.redis-headless.redis.svc.cluster.local
              port: 26379
            - host: redis-node-1.redis-headless.redis.svc.cluster.local
              port: 26379
            - host: redis-node-2.redis-headless.redis.svc.cluster.local
              port: 26379
      redis:
        install: false

The container logs show:

Checking: resque.yml, cable.yml
- FAILED connecting to 'redis://mymaster:26379' from resque.yml, through redis.redis.svc.cluster.local
ERROR: NOAUTH Authentication required.
- FAILED connecting to 'redis://mymaster:26379' from cable.yml, through redis.redis.svc.cluster.local
ERROR: NOAUTH Authentication required.

Contents of the resque.yaml and cable.yaml files within that container look like this:

production:
  url: redis://:changemechangeme@mymaster:26379
  sentinels:
    - host: redis-node-0.redis-headless.redis.svc.cluster.local
      port: 26379
    - host: redis-node-1.redis-headless.redis.svc.cluster.local
      port: 26379
    - host: redis-node-2.redis-headless.redis.svc.cluster.local
      port: 26379
  id:
  adapter: redis

I am using the default redis user and the colon before the password seems to be causing the issue. I was able to deploy a redis-cli pod in the gitlab namespace and ensure I was able to connect to redis using the same url as above but without the colon in front of the password.

Is there something I'm missing in my values.yaml or any other suggestions you might have?