Add default affinity rules for Redis (#508)
Add default affinity rules for Redis (#508)

* Add default affinity rules

Signed-off-by: Fahim Abrar <d8e938afd916174a6fc36987ecdc7722e71cec98@appscode.com>

* Add comments

Signed-off-by: Tamal Saha <402c73331c166b2b8cf6f3b0d25d0ef4d0769ddb@appscode.com>

* Add shard template label to affinity for clustered redis

Signed-off-by: Tamal Saha <402c73331c166b2b8cf6f3b0d25d0ef4d0769ddb@appscode.com>

Co-authored-by: Tamal Saha <402c73331c166b2b8cf6f3b0d25d0ef4d0769ddb@appscode.com>
k8sdb/apimachinery,k8sdb/apimachinery