DEPLOYMENT_BLOCKED is not handled

[ivanmaximenko]

Protection manager does not handle the case when:

While trying to update the protection status of a task, if you receive a DEPLOYMENT_BLOCKED error message, it means the service has more protected tasks than the desired count of tasks for the service. To resolve this error, do one the following:
- Wait for the current task protection to expire. Then set task protection.
- Determine which tasks can be stopped. Then use UpdateTaskProtectionwith the protectionEnabled option set to false for these tasks.
- Increase the desired task count of the service to more than the number of protected tasks.

Text from here https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task-scale-in-protection.html