When referencing a list of maps variable from within a resource, only
the first list element is included the plan. This is because GetRaw
can't access the interpolated values. Add some tests to document this
behavior for both Get and GetRaw.
ResourceConfig.Get could previously return (nil, true) when looking up
an interpolated map in a list because of the indexing ambiguity. Make
sure we test that a non-existent value always returns false.
The primary change here is to expect that Config contains computed
values. This introduces `unknownCheckWalker` that does a really basic
reflectwalk to look for computed values and use that for IsComputed.
We had a weird mixture before checking whether c.Config was simply
missing values to determine where to look. Now we rely on IsComputed
heavily.
This implements DeepCopy, still need to implement Equals to make this
more useful. Coming in the next commit but this still has its own full
functionality + tests.
This adds some unit tests for config maps with dots in the key values.
We check for maps with keys which have overlapping names. There are
however still issues with nested maps which create overlapping flattened
names, as well as nested lists with dots in the key.
