[chart/redis-ha Add pod meta label to master

[tschirmer]

Would like to see a pod label added onto the master, we can then set a pod disruption budget specifically for the current master, to prevent split brain when nodes go down or the kubernetes descheduler is run.

[DandyDeveloper]

@tschirmer Something like additionalLabels just specific to the master / slaves:

redis:
  master:
     additionalLabels: {}
  slaves:
     additionalLabels: {}

[lindesvard]

This would help me quite a lot.

I have dedicated nodes for my redis-ha, but would like to spawn other pods on the nodes which has the replicas (so I can take advantage of the memory and cpu for the idle nodes).

If I had this feature I could add some rules to not spawn pods on the node which has the master label