Commits on Feb 16, 2022

1. helper/schema: Schema.DiffSuppressOnRefresh …

   Unfortunately in the original design of DiffSuppressFunc we made it work
   only during planning, and so the normalization vs. drift classification
   it does isn't honored in any other situation.
   
   Unilaterally enabling it for both refresh and apply would be too risky at
   this late stage where so many existing provider behaviors rely on these
   subtle details, but here we introduce a more surgical _opt-in_ mechanism
   whereby specific attributes can be set to also check the Refresh result
   against DiffSuppressFunc, and so avoid reporting any normalization done
   by the remote system as if it were drift.
   
   This behavior will be primarily useful for strings containing complex data
   serialized into some particular microsyntax which allows expressing the
   same information multiple ways. In particular, existing situations where
   we classify whitespace changes and other such immaterial changes in JSON
   values as normalization vs. drift would be a good candidate to enable
   this flag, so that we can get the same results during refreshing and thus
   avoid churning any downstream resources that refer to the
   unexpectedly-updated result.

   

   apparentlymart committed Feb 16, 2022
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