templates: Add ipv6 variant that triggers azure singlestack

Refactor cluster_variant checking to be more robust.

ci-operator/templates/openshift/installer/cluster-launch-installer-e2e.yaml

@@ -393,10 +393,18 @@ objects:
  cp "$(command -v openshift-install)" /tmp
  mkdir /tmp/artifacts/installer
 
+ function has_variant() {
+ regex="(^|,)$1($|,)"
+ if [[ $CLUSTER_VARIANT =~ $regex ]]; then
+ return 0
+ fi
+ return 1
+ }
+
  if [[ -n "${INSTALL_INITIAL_RELEASE}" && -n "${RELEASE_IMAGE_INITIAL}" ]]; then
  echo "Installing from initial release ${RELEASE_IMAGE_INITIAL}"
  OPENSHIFT_INSTALL_RELEASE_IMAGE_OVERRIDE="${RELEASE_IMAGE_INITIAL}"
- elif [[ "${CLUSTER_VARIANT}" =~ "mirror" ]]; then
+ elif has_variant "mirror"; then
  export PATH=$PATH:/tmp # gain access to oc
  while [ ! command -V oc ]; do sleep 1; done # poll to make sure that the test container has dropped oc into the shared volume
 
@@ -424,18 +432,18 @@ objects:
  cp "${SSH_PRIV_KEY_PATH}" ~/.ssh/
 
  workers=3
- if [[ "${CLUSTER_VARIANT}" =~ "compact" ]]; then
+ if has_variant "compact"; then
  workers=0
  fi
  if [[ "${CLUSTER_TYPE}" = "aws" ]]; then
  master_type=null
- if [[ "${CLUSTER_VARIANT}" =~ "xlarge" ]]; then
+ if has_variant "xlarge"; then
  master_type=m5.8xlarge
- elif [[ "${CLUSTER_VARIANT}" =~ "large" ]]; then
+ elif has_variant "large"; then
  master_type=m5.4xlarge
  fi
  subnets="[]"
- if [[ "${CLUSTER_VARIANT}" =~ "shared-vpc" ]]; then
+ if has_variant "shared-vpc"; then
  case $((RANDOM % 4)) in
  0) subnets="['subnet-030a88e6e97101ab2','subnet-0e07763243186cac5','subnet-02c5fea7482f804fb','subnet-0291499fd1718ee01','subnet-01c4667ad446c8337','subnet-025e9043c44114baa']";;
  1) subnets="['subnet-0170ee5ccdd7e7823','subnet-0d50cac95bebb5a6e','subnet-0094864467fc2e737','subnet-0daa3919d85296eb6','subnet-0ab1e11d3ed63cc97','subnet-07681ad7ce2b6c281']";;
@@ -498,7 +506,7 @@ objects:
  vnetname=""
  ctrlsubnet=""
  computesubnet=""
- if [[ "${CLUSTER_VARIANT}" =~ "shared-vpc" ]]; then
+ if has_variant "shared-vpc"; then
  vnetrg="os4-common"
  vnetname="do-not-delete-shared-vnet-${AZURE_REGION}"
  ctrlsubnet="subnet-1"
@@ -545,7 +553,7 @@ objects:
  network=""
  ctrlsubnet=""
  computesubnet=""
- if [[ "${CLUSTER_VARIANT}" =~ "shared-vpc" ]]; then
+ if has_variant "shared-vpc"; then
  network="do-not-delete-shared-network"
  ctrlsubnet="do-not-delete-shared-master-subnet"
  computesubnet="do-not-delete-shared-worker-subnet"
@@ -580,7 +588,7 @@ objects:
 
  # as a current stop gap -- this is pointing to a proxy hosted in
  # the namespace "ci-test-ewolinet" on the ci cluster
- if [[ "${CLUSTER_VARIANT}" =~ "proxy" ]]; then
+ if has_variant "proxy"; then
 
  # FIXME: due to https://bugzilla.redhat.com/show_bug.cgi?id=1750650 we need to
  # use a http endpoint for the httpsProxy value
@@ -664,17 +672,31 @@ objects:
  fi
 
  network_type="${CLUSTER_NETWORK_TYPE-}"
- if [[ "${CLUSTER_VARIANT}" =~ "ovn" ]]; then
+ if has_variant "ovn"; then
  network_type=OVNKubernetes
  fi
- if [[ -n "${network_type}" ]]; then
+ if has_variant "ipv6"; then
+ export OPENSHIFT_INSTALL_AZURE_EMULATE_SINGLESTACK_IPV6=true
+ cat >> /tmp/artifacts/installer/install-config.yaml << EOF
+ networking:
+ networkType: OVNKubernetes
+ machineNetwork:
+ - cidr: 10.0.0.0/16
+ - cidr: fd00::/48
+ clusterNetwork:
+ - cidr: fd01::/48
+ hostPrefix: 64
+ serviceNetwork:
+ - fd02::/112
+ EOF
+ elif [[ -n "${network_type}" ]]; then
  cat >> /tmp/artifacts/installer/install-config.yaml << EOF
  networking:
  networkType: ${network_type}
  EOF
  fi
 
- if [[ "${CLUSTER_VARIANT}" =~ "mirror" ]]; then
+ if has_variant "mirror"; then
  cat >> /tmp/artifacts/installer/install-config.yaml << EOF
  imageContentSources:
  - source: "${MIRROR_BASE}-scratch"
@@ -683,7 +705,7 @@ objects:
  EOF
  fi
 
- if [[ "${CLUSTER_VARIANT}" =~ "fips" ]]; then
+ if has_variant "fips"; then
  cat >> /tmp/artifacts/installer/install-config.yaml << EOF
  fips: true
  EOF