Test/api.sh/vsphere: configure cloud-init via VM's extraConfig

We used to provide the cloud-init user-data and meta-data to the VM as
key/value in the VM's extraConfig as guestinfo keys. This replaces bunch
of code that used to create an ISO, upload it to VSphere and attach it
to the VM.

We recently started to observe issues when uploading the ISO to our
testing VSphere instance in CI. This commit aims to circumvent this
issue by using a different and simpler way to provide the cloud-init
data to the VM.

Signed-off-by: Tomáš Hozza <thozza@redhat.com>

test/cases/api/common/vsphere.sh

@@ -78,6 +78,18 @@ EOF
     echo "${_ci_metadata_path}"
 }
 
+# Compress and encode the provided file path for cloud-init
+#
+# Returns:
+#   - base64 encoded gzip compressed file as a string
+#
+# Arguments:
+#   $1 - path to the file to encode
+function fileToCloudInitEncodedGzipB64() {
+    local _file_path="$1"
+    gzip -c "${_file_path}" | base64 -w 0
+}
+
 # Create an ISO with the provided cloud-init user-data file
 #
 # Returns:
@@ -111,21 +123,7 @@ function verifyInVSphere() {
     local _filename="$1"
     greenprint "Verifying VMDK image: ${_filename}"
 
-    # Create SSH keys to use
-    local _vsphere_ssh_key="${WORKDIR}/vsphere_ssh_key"
-    ssh-keygen -t rsa-sha2-512 -f "${_vsphere_ssh_key}" -C "${SSH_USER}" -N ""
-
     VSPHERE_VM_NAME="osbuild-composer-vm-${TEST_ID}"
-
-    # create cloud-init ISO with the configuration
-    local _ci_userdata_path
-    _ci_userdata_path="$(createCIUserdata "${SSH_USER}" "${_vsphere_ssh_key}.pub")"
-    local _ci_metadata_path
-    _ci_metadata_path="$(createCIMetadata "${VSPHERE_VM_NAME}")"
-    greenprint "💿 Creating cloud-init user-data ISO"
-    local _ci_iso_path
-    _ci_iso_path="$(createCIUserdataISO "${_ci_userdata_path}" "${_ci_metadata_path}")"
-
     VSPHERE_IMAGE_NAME="${VSPHERE_VM_NAME}.vmdk"
     mv "${_filename}" "${WORKDIR}/${VSPHERE_IMAGE_NAME}"
 
@@ -159,6 +157,33 @@ function verifyInVSphere() {
         -on=false \
         "${VSPHERE_VM_NAME}"
 
+    # Create SSH keys to use
+    local _vsphere_ssh_key="${WORKDIR}/vsphere_ssh_key"
+    ssh-keygen -t rsa-sha2-512 -f "${_vsphere_ssh_key}" -C "${SSH_USER}" -N ""
+
+    # Set cloud-init data for the VM
+    local _ci_userdata_path
+    _ci_userdata_path="$(createCIUserdata "${SSH_USER}" "${_vsphere_ssh_key}.pub")"
+    local _ci_userdata_encoded
+    _ci_userdata_encoded="$(fileToCloudInitEncodedGzipB64 "${_ci_userdata_path}")"
+
+    local _ci_metadata_path
+    _ci_metadata_path="$(createCIMetadata "${VSPHERE_VM_NAME}")"
+    local _ci_metadata_encoded
+    _ci_metadata_encoded="$(fileToCloudInitEncodedGzipB64 "${_ci_metadata_path}")"
+
+    # configure the VM to use the cloud-init data
+    greenprint "💿 Configuring the VM to use the cloud-init data"
+    $GOVC_CMD vm.change \
+        -u "${VC8_GOVMOMI_USERNAME}:${VC8_GOVMOMI_PASSWORD}@${VC8_GOVMOMI_URL}" \
+        -k=true \
+        -dc="${VC8_GOVMOMI_DATACENTER}" \
+        -vm "${VSPHERE_VM_NAME}" \
+        -e "guestinfo.userdata=${_ci_userdata_encoded}" \
+        -e "guestinfo.userdata.encoding=gzip+base64" \
+        -e "guestinfo.metadata=${_ci_metadata_encoded}" \
+        -e "guestinfo.metadata.encoding=gzip+base64"
+
     # tagging vm as testing object
     $GOVC_CMD tags.attach \
         -u "${VC8_GOVMOMI_USERNAME}":"${VC8_GOVMOMI_PASSWORD}"@"${VC8_GOVMOMI_URL}" \
@@ -166,35 +191,6 @@ function verifyInVSphere() {
         -c "osbuild-composer testing" gitlab-ci-test \
         "/${VC8_GOVMOMI_DATACENTER}/vm/${VC8_GOVMOMI_FOLDER}/${VSPHERE_VM_NAME}"
 
-    # upload ISO, create CDROM device and insert the ISO in it
-    greenprint "💿 ⬆️ Uploading the cloud-init user-data ISO to VSphere"
-    VSPHERE_CIDATA_ISO_PATH="${VSPHERE_VM_NAME}/cidata.iso"
-    $GOVC_CMD datastore.upload \
-        -u "${VC8_GOVMOMI_USERNAME}:${VC8_GOVMOMI_PASSWORD}@${VC8_GOVMOMI_URL}" \
-        -k=true \
-        -dc="${VC8_GOVMOMI_DATACENTER}" \
-        -ds="${VC8_GOVMOMI_DATASTORE}" \
-        "${_ci_iso_path}" \
-        "${VSPHERE_CIDATA_ISO_PATH}"
-
-    local _cdrom_device
-    greenprint "🖥️ + 💿 Adding a CD-ROM device to the VM"
-    _cdrom_device="$($GOVC_CMD device.cdrom.add \
-        -u "${VC8_GOVMOMI_USERNAME}:${VC8_GOVMOMI_PASSWORD}@${VC8_GOVMOMI_URL}" \
-        -k=true \
-        -dc="${VC8_GOVMOMI_DATACENTER}" \
-        -vm "${VSPHERE_VM_NAME}")"
-
-    greenprint "💿 Inserting the cloud-init ISO into the CD-ROM device"
-    $GOVC_CMD device.cdrom.insert \
-        -u "${VC8_GOVMOMI_USERNAME}:${VC8_GOVMOMI_PASSWORD}@${VC8_GOVMOMI_URL}" \
-        -k=true \
-        -dc="${VC8_GOVMOMI_DATACENTER}" \
-        -ds="${VC8_GOVMOMI_DATASTORE}" \
-        -vm "${VSPHERE_VM_NAME}" \
-        -device "${_cdrom_device}" \
-        "${VSPHERE_CIDATA_ISO_PATH}"
-
     # start the VM
     greenprint "🔌 Powering up the VSphere VM"
     $GOVC_CMD vm.power \