The human-oriented plan output includes a short summary of the meaning of
all of the different "icons" used to describe different kinds of change,
but nothing was previously describing how OpenTofu uses "->" to describe
the transition between current and planned values for update in-place, "~".
We'll now include a concise note about that as part of the icon summary,
keeping things still relatively compact but nonetheless giving something
to refer to if a reader is unsure about the meaning of this notation.
Signed-off-by: Martin Atkins <mart@degeneration.co.uk>
* Introduce a snapshot check for equivalence tests
* New snapshots
* Allow overriding plan timestamp for snapshots
* Allow setting the seed externally (as an env var) for testing purposes
* Remove an equivalence test that depends on a random number
* add test cases
* run equivalence tests
* delete old outputs
* drift_relevant_attributes should ignore the number attribute
* also add a test for data reads
* test destroy only
