Pin black to 21.12.b0

Handle ConnectionClosedError in run_and_get_successful_realizations

The monitor can experience various connection issues, which will result
in connection closed errors. This commits adds handling of these errors
and will retry the connection.

The handling of ConnectionRefusedError is also changed, and will no
longer throw an exception if encountered. Instead, the ensemble is
cancelled, and the number of successful realizations is reported.
The responsibility of deciding experiment failure/success based on
number of failing realizations is left to the parent scope.

Test are also added to show that the correct number of successful
realizations is reported, even in the event of connection refused and
connection closed errors.

Pin ert-storage<0.3.7

Handle ConnectionClosedError in run_and_get_successful_realizations

The monitor can experience various connection issues, which will result
in connection closed errors. This commits adds handling of these errors
and will retry the connection.

The handling of ConnectionRefusedError is also changed, and will no
longer throw an exception if encountered. Instead, the ensemble is
cancelled, and the number of successful realizations is reported.
The responsibility of deciding experiment failure/success based on
number of failing realizations is left to the parent scope.

Test are also added to show that the correct number of successful
realizations is reported, even in the event of connection refused and
connection closed errors.

Add benchmarks

Make ConfigKeys an enum w/o ResPrototype

Remove local_dataset_type

This type was relevant when using Kalman-filters which is not the case
anymore. See equinor#2539 for details.
Some parts of the functionality was needed, however, so the class can
not just be removed.

Move necessary functionality from local_dataset_type to
local_ministep_type, then update and simplify usage. Separate unit-test
for local_dataset_type removed.

Remove storage that was added by mistake

Remove storage that was added by mistake

Pin ert-storage <0.3.6