Update Readme files.

Signed-off-by: Andrea Dolfi <andrea.dolfi.e@thalesdigital.io>

Author: Andrea Dolfi

charts/redis-cluster/README.md

@@ -95,6 +95,7 @@ helm delete <my-release> --namespace <namespace>
 | redisCluster.name | string | `""` |  |
 | redisCluster.persistenceEnabled | bool | `true` |  |
 | redisCluster.recreateStatefulSetOnUpdateInvalid | bool | `false` | Some fields of statefulset are immutable, such as volumeClaimTemplates. When set to true, the operator will delete the statefulset and recreate it. Default is false. |
+| redisCluster.enableMasterSlaveAntiAffinity | bool | `false` | Add the appropriate annotation to RedisCluster, so that the operator can enforce anti affinity between leaders and followers. Notice that this requires webhooks to be enabled on the operator. Default is false. |
 | redisCluster.redisSecret.secretKey | string | `""` |  |
 | redisCluster.redisSecret.secretName | string | `""` |  |
 | redisCluster.resources | object | `{}` |  |

charts/redis-operator/README.md

@@ -46,6 +46,8 @@ helm install <redis-operator> ot-helm/redis-operator --version=0.15.5 --appVersi
 > Note: If `certificate.secretName` is not provided, the operator will generate a self-signed certificate and use it for webhook server.
 ---
 > Note : If you want to disable the webhook you have to pass the `--set webhook=false` and `--set certmanager.enabled=false`  while installing the redis-operator.
+---
+> Note: If you want to use an existing `ClusterIssuer` to sign the webhook certificate, you can pass `--set issuer.create=false`, `--set issuer.kind=ClusterIssuer` and `--set issuer.name=cluster-issuer-name-here` while installing the operator.
 
 ### 4. Patch the CA Bundle (if using cert-manager)
 
@@ -90,6 +92,8 @@ kubectl create secret tls <webhook-server-cert> --key tls.key --cert tls.crt -n
 | certificate.secretName | string | `"webhook-server-cert"` |  |
 | certmanager.apiVersion | string | `"cert-manager.io/v1"` |  |
 | certmanager.enabled | bool | `false` |  |
+| issuer.create | bool | `true` |  |
+| issuer.kind | string | `Issuer` |  |
 | issuer.email | string | `"shubham.gupta@opstree.com"` |  |
 | issuer.name | string | `"redis-operator-issuer"` |  |
 | issuer.privateKeySecretName | string | `"letsencrypt-prod"` |  |