API to set the state of the task instance to the specified state (airflow-1.10.11)

[yyhecust]

Description
we need a feature where we can set the state of the task instance to the specified state.

Use case / motivation
In my application, some task instances have been scheduled for a long time, we want to put it in the failed state. Currently, we are doing this by using airflow Web UI but we want to use API instead.

Are you willing to submit a PR?
Yes, I'm willing to.

Related Issues
#16412

[potiuk]

Aiflow 1.10 reaches end-of-life June 17 (in 3 days). Currently we are in the mode of implementing only critical fixes to 1.10. I heartly recommend to migrate to Airflow 2 at earliest convenience.

I believe the new REST API in 2.0 is the best to have it. There is no such API yet there but there is already an isssue #16412 created for that.

Closing as duplicate.