As it is already opened in the original repository it would be nice to have this HEARTBEAT monitor implemented.

The API mentions the Monitor Heartbeat type with the value 5

monitor>type |

• 1 - HTTP(s)
• 2 - Keyword
• 3 - Ping
• 4 - Port
• 5 - Heartbeat

I'm studying the Hashicorp SDK to try to contribute in my free time, but then I would need sometime.