Introduce the provisioningHostname env variable in Ironic

Create a new provisioningHostname value in values.yaml in order to set
the new IRONIC_URL_HOSTNAME, that allows to set the address(es) Ironic
will bind to.

Signed-off-by: Marco Chiappero <marco.chiappero@suse.com>

metal3-chart/charts/ironic/templates/configmap.yaml

@@ -36,6 +36,8 @@ data:
   {{- end }}
   {{- if .Values.global.provisioningIP }}
   PROVISIONING_IP: {{ .Values.global.provisioningIP }}
+  {{- else if .Values.global.provisioningHostname }}
+  IRONIC_URL_HOSTNAME: {{ .Values.global.provisioningHostname }}
   {{- end }}
   IRONIC_FAST_TRACK: "true"
   LISTEN_ALL_INTERFACES: "true"

metal3-chart/charts/ironic/values.yaml

@@ -32,6 +32,12 @@ global:
   # IP Address assigned to network interface on provisioning network
   provisioningIP: ""
 
+  # Fully Qualified Domain Name used by Ironic for both binding (to the
+  # associated IPv4 and/or IPv6 addresses) and exposing the API, dnsmask and
+  # media, also used by BMO. Note, this is the only way to enable a fully
+  # working dual-stack configuration.
+  provisioningHostname: ""
+
   # Whether the NIC names should be predictable or not
   predictableNicNames: "true"
 

metal3-chart/values.yaml

@@ -60,6 +60,12 @@ global:
   # IP Address assigned to network interface on provisioning network
   provisioningIP: ""
 
+  # Fully Qualified Domain Name used by Ironic for both binding (to the 
+  # associated IPv4 and/or IPv6 addresses) and exposing the API, dnsmask and
+  # media, also used by BMO. Note, this is the only way to enable a fully
+  # working dual-stack configuration.
+  provisioningHostname: ""
+
   # Hostname or IP for accessing the Ironic API server from a non-provisioning network
   externalHttpHost: ""