AGENT-698: Agent support for OCI platform

Initial support for the external OCI platform. This sets the libvirt
domain manufacturer and product to allow the assisted-service
validations for this platform to pass.

Requires openshift/assisted-service#5438
and openshift/installer#7442

In addition, this requires changes to either:
a) use a minimalISO instead of a fullISO in the agent-based-installer
b) not require a mimimalISO in assisted-service

agent/05_agent_configure.sh

@@ -277,7 +277,7 @@ function enable_load_balancer() {
   local load_balancer_ip=${2}
   local HTTP_PORT=80
 
-  if [[ "${AGENT_PLATFORM_TYPE}" == "none" && "${NUM_MASTERS}" > "1" ]]; then
+  if [[ "${AGENT_PLATFORM_TYPE}" == "none" || "${AGENT_PLATFORM_TYPE}" == "external" ]] && [[ "${NUM_MASTERS}" > "1" ]]; then
 
     # setup haproxy as the load balancer
     if [[ "${IP_STACK}" == "v6" ]]; then
@@ -370,6 +370,30 @@ EOF
   fi
 }
 
+# Change the domain manufacturer and product to ensure validations pass when using external platform
+function set_oci() {
+
+    tmpdomain=$(mktemp --tmpdir "virt-domain--XXXXXXXXXX")
+    _tmpfiles="$_tmpfiles $tmpdomain"
+
+    for (( n=0; n<${2}; n++ ))
+    do
+        name=${CLUSTER_NAME}_${1}_${n}
+        sudo virsh dumpxml ${name} > ${tmpdomain}
+        sed -i '/\/os>/a\
+ <sysinfo type="smbios">\
+   <system>\
+     <entry name="manufacturer">OracleCloud.com</entry>\
+     <entry name="product">OCI</entry>\
+   </system>\
+ </sysinfo>' ${tmpdomain}
+
+        sed -i '/\<os>/a\
+ <smbios mode="sysinfo"/>' ${tmpdomain}
+       sudo virsh define ${tmpdomain}
+    done
+}
+
 write_pull_secret
 
 # needed for assisted-service to run nmstatectl
@@ -386,8 +410,8 @@ if [[ ! -z "${MIRROR_IMAGES}" ]]; then
 fi
 
 if [[ "${NUM_MASTERS}" > "1" ]]; then
-  if [[ "${AGENT_PLATFORM_TYPE}" == "none" ]]; then
-    # for platform "none" both API and INGRESS point to the same
+  if [[ "${AGENT_PLATFORM_TYPE}" == "none" || "${AGENT_PLATFORM_TYPE}" == "external" ]]; then
+    # for platform "none" or "external" both API and INGRESS point to the same
     # load balancer IP address
     get_vips
     configure_dnsmasq ${PROVISIONING_HOST_EXTERNAL_IP} ${PROVISIONING_HOST_EXTERNAL_IP}
@@ -407,6 +431,11 @@ else
   configure_dnsmasq ${ip} ""
 fi
 
+if [[ "${AGENT_PLATFORM_TYPE}" == "external" ]]; then
+  set_oci master $NUM_MASTERS
+  set_oci worker $NUM_WORKERS
+fi
+
 generate_cluster_manifests
 
 generate_extra_cluster_manifests

agent/roles/manifests/templates/agent-cluster-install_yaml.j2

@@ -4,7 +4,7 @@ metadata:
   name: test-agent-cluster-install
   namespace: {{ cluster_namespace }}
 spec:
-{% if num_masters != "1" %}
+{% if (platform_type != "none") and (platform_type != "external") %}
   apiVIP: {{ api_vip }} 
   ingressVIP: {{ ingress_vip }} 
 {% endif %}
@@ -43,8 +43,12 @@ spec:
     - cidr: {{ external_subnet_v6 }}
 {% endif %}
     networkType: {{ network_type }}
-{% if platform_type == "none" %}
+{% if (platform_type == "none") or (platform_type == "external") %}
     userManagedNetworking: true
+{% endif %}
+{% if (platform_type == "external") %}
+  external:
+    platformName: external
 {% endif %}
   provisionRequirements:
     controlPlaneAgents: {{ num_masters }}

agent/roles/manifests/templates/install-config_yaml.j2

@@ -49,6 +49,9 @@ networking:
 platform:
 {% if (platform_type == "none") %}
   none: {}
+{% elif (platform_type == "external") %}
+  external:
+    platformName: oci
 {% else %}
 {% set macs = agent_nodes_macs.split(',') %}
 {% set hostnames = agent_nodes_hostnames.split(',') %}