Update golang version with `redis_storage_size` field from ansible

[git-hyagi]

Is your feature request related to a problem? Please describe.
Add a redis_storage_size field in go version to keep compatibility with ansible: #1013

Additional context
In go version we already have a field to define the requirements:

pulp-operator/apis/repo-manager.pulpproject.org/v1beta2/pulp_types.go

Line 965 in d21b05d

RedisResourceRequirements corev1.ResourceRequirements `json:"redis_resource_requirements,omitempty"`

we will need to implement the logic to use the redis_storage_size or cache.redis_resource_requirements.requests.storage in

pulp-operator/controllers/repo_manager/redis.go

Lines 161 to 166 in d21b05d

	Spec: corev1.PersistentVolumeClaimSpec{
	Resources: corev1.ResourceRequirements{
	Requests: corev1.ResourceList{
	corev1.ResourceName(corev1.ResourceStorage): resource.MustParse("1Gi"),
	},
	},