Iotronic Lightning-rod v2.1.2

CHANGELOG:

• Board provisioning management added
• Batch API support added
• Refactored Lightning-rod modules management: added Boot() method
• Plugin Manager refactored:
  • added support for plugin written in Python 3
  • added Boot() method
  • plugins can be loaded also without connection toward Iotronic
  • added checksum verify system for each plugin loaded into the board
  • added plugins log management
  • added RPC method to recover plugins logs from Iotronic API
• Refactored authentication system to Iotronic:
  • "basic" mode only (at the moment)
• Node-RED Manager added (ALPHA)
• Installation procedures fixed.