Gammapy version

1.2

Bug description

When writing a FluxPoints table (.ecsv) to file it is not possible to overwrite it.

Expected behavior

The overwrite argument should be taken into account.

To Reproduce

From any analysis get a FluxPoints instance (in my case it was from obtained from LightCurveEstimator.run())
and call the write() method with overwrite=True.

You will get the following error,

OSError: File xxxxxx.ecsv already exists. If you mean to replace it then use the argument "overwrite=True".

Other information

The bug is here:

It should be sufficient to pass the overwrite argument to table.write(), because the default (inherited from astropy.table.Table.write()) is False.