[compute] Update prometheus_listen_address to include ipv6

Relates: OSPRH-18158

Author: elfiesmelfie

templates/ceilometercompute/config/ceilometer.conf

@@ -37,7 +37,7 @@ prometheus_tls_keyfile = {{ .TlsKey }}
 {{- end }}
 enable_notifications=False
 enable_prometheus_exporter=true
-prometheus_listen_addresses='0.0.0.0:9101'
+prometheus_listen_addresses='0.0.0.0:9101,[::]:9101'
 
 [publisher]
 telemetry_secret=eQ5qb0yysfJ8lx82Vl061vSyY

templates/ceilometeripmi/config/ceilometer.conf

@@ -30,7 +30,7 @@ driver=noop
 heartbeat_socket_dir=/var/lib/ceilometer
 enable_notifications=False
 enable_prometheus_exporter=true
-prometheus_listen_addresses='0.0.0.0:9102'
+prometheus_listen_addresses='0.0.0.0:9102,[::]:9102'
 {{- if .TLS }}
 prometheus_tls_enable = True
 prometheus_tls_certfile = {{ .TlsCert }}