Support legacy drivers

Adds support for pxe_ipmitool, pxe_ipmitool_socat, agent_ipmitool and
agent_ipmitool_socat drivers with virtualbmc. Also adds entries for SNMP-based
drivers.

Change-Id: I461e74e3199e02a35ee0d3ddc1f6e49c1eda0536

ansible/host_vars/localhost

@@ -105,7 +105,13 @@ state_file_path: >-
 # The default Ironic driver of a node. Can be overridden per-node.
 default_ironic_driver: ipmi
 
-# Maps BMC emulation tools to the Ironic driver they support.
+# Maps Ironic drivers to the BMC emulation tool they support.
 bmc_emulators:
-  virtualbmc: ipmi
-  sushy-tools: redfish
+  agent_ipmitool: virtualbmc
+  agent_ipmitool_socat: virtualbmc
+  ipmi: virtualbmc
+  pxe_ipmitool: virtualbmc
+  pxe_ipmitool_socat: virtualbmc
+  pxe_snmp: virtualpdu
+  redfish: sushy-tools
+  snmp: virtualpdu

ansible/node_bmc.yml

@@ -9,10 +9,18 @@
 - name: Perform Virtual BMC configuration
   hosts: libvirt
   vars:
+    # List of ironic drivers that require virtualbmc.
+    vbmc_drivers: >-
+      {{ bmc_emulators.items() |
+         selectattr('1', 'eq', 'virtualbmc') |
+         map(attribute='0') |
+         list }}
+    # List of ironic nodes using drivers that require virtualbmc.
     vbmc_nodes: >-
-      {{ hostvars.localhost.tenks_state[inventory_hostname].nodes
-           | default([]) | selectattr('ironic_driver', 'eq',
-                                      bmc_emulators.virtualbmc) | list }}
+      {{ hostvars.localhost.tenks_state[inventory_hostname].nodes |
+         default([]) |
+         selectattr('ironic_driver', 'in', vbmc_drivers) |
+         list }}
   tasks:
     - name: Check that enough ports are available for Virtual BMC
       fail: