AB#2554 GCP CSI driver deployment (#532)

* Allow enabling/disabling of CSI driver through config

* Fix inconsistent namespace parsing

* Deploy GCP CSI driver on init

* Update invalid pod tolerations

* Add generate script for CSI charts

* Update generateCilium script

Signed-off-by: Daniel Weiße <dw@edgeless.systems>

cli/internal/helm/update-csi-charts.sh

@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+
+# update-csi-charts updates the Helm charts for the CSI drivers in the CLI.
+
+set -euo pipefail
+shopt -s inherit_errexit
+
+# Required tools
+if ! command -v git &> /dev/null; then
+  echo "git could not be found"
+  exit 1
+fi
+
+# download_chart downloads the Helm chart for the given CSI driver and version.
+#
+# Arguments:
+#   $1: URL of the git repo containing the Helm chart
+#   $2: branch or tag of the git repo
+#   $3: path to the Helm chart in the git repo
+#   $4: name of the Helm chart
+download_chart() {
+  chart_url=$1
+  branch=$2
+  chart_dir=$3
+  chart_name=$4
+
+  repo_tmp_dir=$(mktemp -d)
+
+  chart_base_path="charts/edgeless/constellation-services/charts/"
+
+  pushd "${repo_tmp_dir}"
+  git clone --filter=blob:none --no-checkout --sparse --depth 1 --branch="${branch}" "${chart_url}" "${repo_tmp_dir}"
+
+  git sparse-checkout add "${chart_dir}"
+  git checkout
+  popd
+
+  # remove old chart
+  rm -r "${chart_base_path}${chart_name}"
+
+  # move new chart
+  mkdir -p "${chart_base_path}/${chart_name}"
+  cp -r "${repo_tmp_dir}/${chart_dir}"/* "${chart_base_path}${chart_name}"
+  rm -r "${repo_tmp_dir}"
+
+  return
+}
+
+## GCP CSI Driver
+# TODO: clone from main branch once we rebase on upstream
+download_chart "https://github.com/edgelesssys/constellation-gcp-compute-persistent-disk-csi-driver" "develop" "charts" "gcp-compute-persistent-disk-csi-driver"
+
+## Azure CSI Driver
+# TODO: https://github.com/edgelesssys/constellation/pull/548