Refresh machine list eagerly

[fedjo]

1. Job that refreshes machine list needs to runs more often and eagerly re-schedule related jobs when changes found
2. Get UAV locations from parcel related information

Description

1. The problem is that for any change in the machine/uav list, FC does not have a mechanism to inform the weather srv. Thus weather srv needs to have a mechanism (a job) to run periodically (let's say every 1 minute) to detect if changes exist and if so to refresh the weather srv machine list and update the forecasts provided.

2. As a step forward, this job also needs to get the parcel info (the location) of the machine from the machines object list /api/v1/AgriCulturalMachines provided by the FC.
   Currently, parcel locations are retrieved form /api/v1/FarmParcels and there is no way to associate a machine with a specific parcel. That way we will be able to calculate forecasts only for the parcel that the machine belongs. Machine info need to be cached internally in the WSRV. A dict structure can be used as:

{
   'machine_identifier': [(lat1, lon1), (lat2, lon2)]
}

Note: These changes will eventually affect the way that the jobs are scheduled and also the dao method which detects if forecast has already been calculated for a machine