[BUG?] Redis image support IPv6

[git-hyagi]

Describe the bug
We are setting an IPv4 address for Redis liveness and readiness probes:

pulp-operator/controllers/repo_manager/redis.go

Line 286 in 05bc596

"redis-cli -h 127.0.0.1 -p 6379",

pulp-operator/controllers/repo_manager/redis.go

Line 307 in 05bc596

"redis-cli -h 127.0.0.1 -p 6379",

We should validate if this could have issues in environments with only IPv6 enabled.
We would also need to check if the image supports IPv6.

To Reproduce
I didn't reproduce this error, this issue needs more investigation.

[fao89]

it seems redis-cli -h 127.0.0.1 does some magic and works even for IPv6,
but the redis itself doesn't seem to be good with IPv6
redis/redis#3076
redis/redis#2511 (comment)