prometheus: Consistently import the base class and supervisor, if needed.

puppet/zulip_ops/manifests/prometheus/rabbitmq.pp

@@ -3,6 +3,8 @@
 # https://www.rabbitmq.com/prometheus.html
 #
 class zulip_ops::prometheus::rabbitmq {
+  include zulip_ops::prometheus::base
+
   exec { 'enable rabbitmq-prometheus':
     command => 'rabbitmq-plugins enable rabbitmq_prometheus',
     unless  => 'grep -q rabbitmq_prometheus /etc/rabbitmq/enabled_plugins',

puppet/zulip_ops/manifests/prometheus/redis.pp

@@ -1,6 +1,9 @@
 # @summary Prometheus monitoring of redis servers
 #
 class zulip_ops::prometheus::redis {
+  include zulip_ops::prometheus::base
+  include zulip::supervisor
+
   $version = $zulip::common::versions['redis_exporter']['version']
   $dir = "/srv/zulip-redis_exporter-${version}"
   $bin = "${dir}/redis_exporter"

puppet/zulip_ops/manifests/prometheus/tornado.pp

@@ -1,6 +1,9 @@
 # @summary Prometheus monitoring of tornado processes
 #
 class zulip_ops::prometheus::tornado {
+  include zulip_ops::prometheus::base
+  include zulip::supervisor
+
   $version = $zulip::common::versions['process_exporter']['version']
   $dir = "/srv/zulip-process_exporter-${version}"
   $bin = "${dir}/process-exporter"

puppet/zulip_ops/manifests/prometheus/uwsgi.pp

@@ -1,6 +1,9 @@
 # @summary Prometheus monitoring of uwsgi servers
 #
 class zulip_ops::prometheus::uwsgi {
+  include zulip_ops::prometheus::base
+  include zulip::supervisor
+
   $version = $zulip::common::versions['uwsgi_exporter']['version']
   $dir = "/srv/zulip-uwsgi_exporter-${version}"
   $bin = "${dir}/uwsgi_exporter"