Fix device ID property name for DSM 6

deploy/synology_dsm.sh

@@ -136,8 +136,11 @@ synology_dsm_deploy() {
     fi
 
     response=$(_get "$_base_url/webapi/$api_path?api=SYNO.API.Auth&version=$api_version&method=login&format=sid&account=$encoded_username&passwd=$encoded_password&otp_code=$otp_code&enable_syno_token=yes&enable_device_token=yes&device_name=$SYNO_Device_Name")
-    _debug3 response "$response"
-    SYNO_Device_ID=$(echo "$response" | grep "device_id" | sed -n 's/.*"device_id" *: *"\([^"]*\).*/\1/p')
+    _secure_debug3 response "$response"
+
+    id_property='device_id'
+    [ "${api_version}" -gt '6' ] || id_property='did'
+    SYNO_Device_ID=$(echo "$response" | grep "$id_property" | sed -n 's/.*"'$id_property'" *: *"\([^"]*\).*/\1/p')
     _secure_debug2 SYNO_Device_ID "$SYNO_Device_ID"
   else
     response=$(_get "$_base_url/webapi/$api_path?api=SYNO.API.Auth&version=$api_version&method=login&format=sid&account=$encoded_username&passwd=$encoded_password&enable_syno_token=yes&device_name=$SYNO_Device_Name&device_id=$SYNO_Device_ID")