This task disables connections to the primary database or read-write database until the database is restarted or connections
are re-enabled with the EnableConnections task or the database is restarted.
If the drop_connections parameter is set to 1, then existing connections from client applications are dropped.
Prior to running this task, consider notifying users whose connections might be affected.
This task can be run without error if connections are already disabled.
Connections from client applications are disabled, but DisableConnections does not disable any connections present as a result
of running the ExecuteTenantBatch task.