[CASSANDRA] Loosen probe check time

As for main cassandra chart, with Azure and also some internal
deployments, `nodepool status` takes more than 3 seconds and so
cassandra is not coming up or quite randomly.
This patch gives more room to `nodepool status` to answer.

Issue-ID: OOM-2687
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: If6a148a432ed3d83a1e89d38f20fe87e89ab0f57
diff --git a/kubernetes/portal/components/portal-cassandra/values.yaml b/kubernetes/portal/components/portal-cassandra/values.yaml
index b06761a..bed75e5 100644
--- a/kubernetes/portal/components/portal-cassandra/values.yaml
+++ b/kubernetes/portal/components/portal-cassandra/values.yaml
@@ -53,16 +53,18 @@
 # probe configuration parameters
 liveness:
   initialDelaySeconds: 10
-  periodSeconds: 10
+  periodSeconds: 20
+  timeoutSeconds: 10
+  successThreshold: 1
+  failureThreshold: 3
   # necessary to disable liveness probe when setting breakpoints
   # in debugger so K8s doesn't restart unresponsive container
   enabled: true
-  successThreshold: 1
-  failureThreshold: 3
 
 readiness:
   initialDelaySeconds: 10
-  periodSeconds: 10
+  periodSeconds: 20
+  timeoutSeconds: 10
   successThreshold: 1
   failureThreshold: 3