VCH Configure UI - add new UT

[javierfz1980]

Since we are refactoring all the components of the VCH creation flow in order to use them as read-only, configure or create components we should add some UT in order to make sure that they are behaving as we expect on each flow.

Also we should test/validate that components are emitting internal model after any input form change in order to update the external cli component.

UT cases to be added to the new/refactored reconfigure components:

• readonly state
• configure state
• create state
• initial form values are equal to initialModel
• updates the form values correctly
• updates internal model after a form value change
• updates the internal model only if form is valid
• doesn't update the model if form is not valid
• emits the model on any model change if is not readOnly
• doesn't emits the model on model change if is not readOnly
• commits the payload with correct content and model type

Also we are adding some brand new components that will also need UT in order to improve the coverage.