ensure service name is always within char limit (#12034)

Signed-off-by: Faraaz Khan <faraaz@rationalizeit.us>

stable/rabbitmq-ha/Chart.yaml

@@ -1,7 +1,7 @@
 name: rabbitmq-ha
 apiVersion: v1
 appVersion: 3.7.12
-version: 1.22.1
+version: 1.22.2
 description: Highly available RabbitMQ cluster, the open source message broker
   software that implements the Advanced Message Queuing Protocol (AMQP).
 keywords:

stable/rabbitmq-ha/templates/service-discovery.yaml

@@ -6,7 +6,7 @@ metadata:
 {{- if .Values.service.annotations }}
 {{ toYaml .Values.service.annotations | indent 4 }}
 {{- end }}
-  name: {{ template "rabbitmq-ha.fullname" . }}-discovery
+  name: {{ printf "%s-discovery" (include "rabbitmq-ha.fullname" .) | trunc 63 | trimSuffix "-" }}
   labels:
     app: {{ template "rabbitmq-ha.name" . }}
     chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}