Stage CNI (and harvester) images if avaliable for airgap (#6275)

* Stage CNI images if avaliable for airgap

Signed-off-by: Derek Nola <derek.nola@suse.com>

install.sh

@@ -442,6 +442,13 @@ install_airgap_tarball() {
         info "decompressing airgap tarball to ${INSTALL_RKE2_AGENT_IMAGES_DIR}"
         gzip -dc "${TMP_AIRGAP_TARBALL}" > "${INSTALL_RKE2_AGENT_IMAGES_DIR}/rke2-images.${SUFFIX}.tar"
     fi
+    # Search for and install additional rke2 images
+    for IMAGE in "${INSTALL_RKE2_ARTIFACT_PATH}"/rke2-images-*."${SUFFIX}"*; do 
+        if [ -f "${IMAGE}" ]; then
+            info "Installing airgap image from ${IMAGE}"
+            cp "${IMAGE}" "${INSTALL_RKE2_AGENT_IMAGES_DIR}"
+        fi
+    done
 }
 
 # install_dev_rpm orchestrates the installation of RKE2 unsigned development rpms