Goal:

Action should detect on pre_condition some conditions that prevent it of being executed and set the action as skipped in that case. Example of this are:

• In a migration action, the instance does not exist.
• In a migration action, the instance is not running in source_node
• etc...

Acceptance Criteria:

• All the actions has pre_condition method populated with relevant status validations. 
• Unit tests are created for the new pre_condition

Open questions:

• Should we create any tempest test to validate specific pre_conditions?