Extract installer using oc adm release extract

This changes dev-scripts to use oc adm release extract, which produces
an openshift-baremetal-install binary with the release payload set from
which it was extracted. This means we no longer need to set
OPENSHIFT_INSTALL_RELEASE_IMAGE_OVERRIDE.

01_install_requirements.sh

@@ -165,7 +165,7 @@ oc_date=0
 if which oc 2>&1 >/dev/null ; then
     oc_date=$(date -d $(oc version -o json  | jq -r '.clientVersion.buildDate') +%s)
 fi
-if [ ! -f ${oc_tools_dir}/${oc_tools_local_file} ] || [ $oc_date -lt 1559308936 ]; then
+if [ ! -f ${oc_tools_dir}/${oc_tools_local_file} ] || [ $oc_date -lt 1566755586 ]; then
   mkdir -p ${oc_tools_dir}
   cd ${oc_tools_dir}
   wget https://mirror.openshift.com/pub/openshift-v4/clients/oc/${oc_version}/linux/oc.tar.gz -O ${oc_tools_local_file}

06_create_cluster.sh

@@ -8,7 +8,7 @@ source common.sh
 source ocp_install_env.sh
 
 # Do some PULL_SECRET sanity checking
-if [[ "${OPENSHIFT_INSTALL_RELEASE_IMAGE_OVERRIDE}" == *"registry.svc.ci.openshift.org"* ]]; then
+if [[ "${OPENSHIFT_RELEASE_IMAGE}" == *"registry.svc.ci.openshift.org"* ]]; then
     if [[ "${PULL_SECRET}" != *"registry.svc.ci.openshift.org"* ]]; then
         echo "Please get a valid pull secret for registry.svc.ci.openshift.org."
         exit 1
@@ -35,9 +35,12 @@ fi
 if [ ! -d ocp ]; then
     mkdir -p ocp
 
+    # Extract an updated client tools from the release image
+    extract_oc ${OPENSHIFT_RELEASE_IMAGE}
+
     if [ -z "$KNI_INSTALL_FROM_GIT" ]; then
       # Extract openshift-install from the release image
-      extract_installer "${OPENSHIFT_INSTALL_RELEASE_IMAGE_OVERRIDE}" ocp/
+      extract_installer "${OPENSHIFT_RELEASE_IMAGE}" ocp/
     else
       # Clone and build the installer from source
       clone_installer

ocp_install_env.sh

@@ -12,32 +12,48 @@ export DNS_VIP=${DNS_VIP:-"192.168.111.2"}
 #
 # See https://origin-release.svc.ci.openshift.org/ for release details
 #
-export OPENSHIFT_INSTALL_RELEASE_IMAGE_OVERRIDE="${OPENSHIFT_INSTALL_RELEASE_IMAGE_OVERRIDE:-registry.svc.ci.openshift.org/ocp/release:4.2}"
+export OPENSHIFT_RELEASE_IMAGE="${OPENSHIFT_RELEASE_IMAGE:-registry.svc.ci.openshift.org/ocp/release:4.2}"
 
-function extract_installer() {
+function extract_command() {
     local release_image
+    local cmd
     local outdir
+    local extract_dir
 
-    release_image="$1"
-    outdir="$2"
+    cmd="$1"
+    release_image="$2"
+    outdir="$3"
 
     extract_dir=$(mktemp -d "installer--XXXXXXXXXX")
     pullsecret_file=$(mktemp "pullsecret--XXXXXXXXXX")
 
     echo "${PULL_SECRET}" > "${pullsecret_file}"
-    # FIXME: Find the pullspec for baremetal-installer image and extract the image, until
-    # https://github.com/openshift/oc/pull/57 is merged
-    baremetal_image=$(oc adm release info --registry-config "${pullsecret_file}" $OPENSHIFT_INSTALL_RELEASE_IMAGE_OVERRIDE -o json | jq -r '.references.spec.tags[] | select(.name == "baremetal-installer") | .from.name')
-    oc image extract --registry-config "${pullsecret_file}" $baremetal_image --path usr/bin/openshift-install:${extract_dir}
-
-    chmod 755 "${extract_dir}/openshift-install"
-    mv "${extract_dir}/openshift-install" "${outdir}"
-    export OPENSHIFT_INSTALLER="${outdir}/openshift-install"
+    oc adm release extract --registry-config "${pullsecret_file}" --command=$cmd --to "${extract_dir}" ${release_image}
 
+    mv "${extract_dir}/${cmd}" "${outdir}"
     rm -rf "${extract_dir}"
     rm -rf "${pullsecret_file}"
 }
 
+# Let's always grab the `oc` from the release we're using.
+function extract_oc() {
+    extract_dir=$(mktemp -d "installer--XXXXXXXXXX")
+    extract_command oc "$1" "${extract_dir}"
+    sudo mv "${extract_dir}/oc" /usr/local/bin
+    rm -rf "${extract_dir}"
+}
+
+function extract_installer() {
+    local release_image
+    local outdir
+
+    release_image="$1"
+    outdir="$2"
+
+    extract_command openshift-baremetal-install "$1" "$2"
+    export OPENSHIFT_INSTALLER="${outdir}/openshift-baremetal-install"
+}
+
 function clone_installer() {
   # Clone repo, if not already present
   if [[ ! -d $OPENSHIFT_INSTALL_PATH ]]; then