[BUG] Action creation fails with 500 server error #215

**I am seeing this behaviour on: **

• OS: Ubuntu
• Carbon Black Product: CBResponse
• Python Version: 2.7

Describe the bug
CBapi uses the old version of API to create action for watchlist
POST /api/v1/watchlist//action
{
"action_type":3,
"watchlist_id":
}
this API is deprecated and throws internal server error

Steps to Reproduce

    watchlist = cb_api.create(Watchlist, data={"name": name, "index_type": watchlist_type})

    watchlist.query = search_query

    watchlist.save()

    alert_action = watchlist.create_action()

    alert_action.action_type = 3  # Create alert on detection

    alert_action.watchlist_id = watchlist.id

    alert_action.save()

run this code, it raises exception
cbapi.errors.ServerError: Received error code 500 from API: Unhandled exception. Check logs for details.

Expected behavior
Should create alert action without error

Additional context

The part in the code need to changed
src/cbapi/response/models.py 471:473, here is used the deprecated REST api calls