The previous name for the version option was v1.0.x which is clearly
wrong since this option was tested against IoTDB version v1.1.0. This
commit fixes this by renaming the option to v1.x.
Fixes:
https://emqx.atlassian.net/browse/EMQX-9926
There was an incorrect assumption that the data incoming to the IoTDB
bridge has already been parsed. This is fixed by parsing the payload as
JSON data if the payload is not already a map.
Fixes:
https://emqx.atlassian.net/browse/EMQX-9854