TT#7473 Ask user confirmation to use 'unsupported' disk

It is impossible to install puppet node on plain SSD drive:
> Error: /dev/sdc does not look like a VirtIO, ServeRAID, LSILOGIC or PowerEdge disk/controller. Exiting to avoid possible data damage.

Lets ask the user confirmation here, as restart installation
is very slow way in case of manual bonding configuration and
slow IBM hardware POST.

The boot option TARGET_DISK can be used to bypass any checks here.

Change-Id: I6ace2c0225b7e66896a00459594901d06ae7bf0c

deployment.sh

@@ -1049,6 +1049,27 @@ check_for_supported_disk() {
     return 0
   fi
 
+  local disk_model
+  disk_model=$(cat "/sys/block/${DISK}/device/model") || true
+  local disk_vendor
+  disk_vendor=$(cat "/sys/block/${DISK}/device/vendor") || true
+
+  echo "WARNING: Cannot detect supported device vendor/model." >&2
+  echo "(Disk: ${DISK}  Vendor: ${disk_vendor}  Model: ${disk_model})" >&2
+  echo "Would you like to continue anyway? (yes/NO)" >&2
+  read a
+  case "$a" in
+    y|Y|yes|YES)
+      echo "Continue anyway as requested."
+      return 0
+      ;;
+    *)
+      echo "Aborting installation using disk '${DISK}'" >&2
+      return 1
+      ;;
+  esac
+  unset a
+
   # no match so far?
   return 1
 }