Update RabbitMQ probes

The current health check that is used for readiness and liveness
probes is considered intrusive and is prompt to produce false
positives[0]. The command is also deprecated and will be removed
in future version.  Updating the probes based on current
recommenation from community[1].

Ref:
[0] https://www.rabbitmq.com/monitoring.html#deprecations
[1] https://www.rabbitmq.com/monitoring.html#health-checks

Change-Id: I83750731150ff9a276f59e3c1288129581fceba5

rabbitmq/Chart.yaml

@@ -15,6 +15,6 @@ apiVersion: v1
 appVersion: v3.7.26
 description: OpenStack-Helm RabbitMQ
 name: rabbitmq
-version: 0.1.13
+version: 0.1.14
 home: https://github.com/rabbitmq/rabbitmq-server
 ...

rabbitmq/templates/bin/_rabbitmq-liveness.sh.tpl

@@ -19,6 +19,5 @@ set -e
 if [ -f /tmp/rabbit-disable-liveness-probe ]; then
    exit 0
 else
-   timeout 5 bash -c "true &>/dev/null </dev/tcp/${MY_POD_IP}/${PORT_AMPQ}"
+   exec rabbitmq-diagnostics -q check_port_connectivity
-   exec rabbitmqctl node_health_check
 fi

rabbitmq/templates/bin/_rabbitmq-readiness.sh.tpl

@@ -19,5 +19,5 @@ set -e
 if [ -f /tmp/rabbit-disable-readiness ]; then
    exit 1
 else
-   exec rabbitmqctl node_health_check
+   exec rabbitmq-diagnostics ping
 fi

releasenotes/notes/rabbitmq.yaml

@@ -13,4 +13,5 @@ rabbitmq:
   - 0.1.11 Add TLS support for helm test
   - 0.1.12 Added helm hook post-install and post-upgrade for rabbitmq wait cluster job
   - 0.1.13 Add prestop action and version 3.8.x upgrade prep
+  - 0.1.14 Update readiness and liveness probes
 ...