T#54410 Get rid of hardcoded checksum of sipwise.gpg file

We want to get rid of old sipwise gpg file as it contains weak key. To
do it we need either update this hardcoded value (and do it every time
when key is updated) or use the same behavior as it's used in
installer.

Change-Id: I77882d3b9f52156ce345f46217f3d438466e018f

templates/scripts/includes/deployment.sh

@@ -193,18 +193,29 @@ install_sipwise_key() {
     echo "Sipwise keyring not found, downloading."
   fi
 
+  local tmp_key
+  tmp_key="$(mktemp)"
+
   for try in 1 2 3; do
-    wget --retry-connrefused --no-verbose -O "${SIPWISE_APT_KEY_PATH}" "${SIPWISE_URL}${SIPWISE_APT_KEY_URL_PATH}"
-    sipwise_key_checksum=$(sha256sum "${SIPWISE_APT_KEY_PATH}" | awk '{print $1}')
 
-    if [[ "${sipwise_key_checksum}" != "${SIPWISE_APT_KEY_CHECKSUM_OLD}" && \
-          "${sipwise_key_checksum}" != "${SIPWISE_APT_KEY_CHECKSUM_NEW}" ]] ; then
-      echo "Sipwise keyring downloaded has wrong checksum (expected: [${SIPWISE_APT_KEY_CHECKSUM}] - got: [${sipwise_key_checksum}]), retry $try" >&2
-    else
-      echo "Sipwise keyring downloaded with expected checksum (sha256sum: [${sipwise_key_checksum}]), debootstrap sipwise key"
-      debootstrap_sipwise_key
-      return
+    wget -q -T 10 --retry-connrefused --tries=3 --no-verbose -O "${tmp_key}" "${SIPWISE_URL}${SIPWISE_APT_KEY_URL_PATH}"
+    chmod 644 "${tmp_key}"
+    local sipwise_key_checksum
+    sipwise_key_checksum=$(sha256sum "${tmp_key}" | awk '{print $1}')
+    echo "Sipwise keyring downloaded with checksum (sha256sum: [${sipwise_key_checksum}]). Is it correct and should be imported into the system? [y/N]"
+
+    if "${INTERACTIVE}"; then
+      local a
+      read -r a
+      if [[ "${a,,}" != "y" ]] ; then
+        echo "The key wasn't accepted, retrying... ${x}/3"
+        continue
+      fi
     fi
+    echo "The key has been accepted, installing it as /etc/apt/trusted.gpg.d/sipwise.gpg"
+    debootstrap_sipwise_key
+    mv "${tmp_key}" "${SIPWISE_APT_KEY_PATH}"
+    return
   done
 
   die "Error validating sipwise keyring for apt usage, aborting installation."