Move instance_error_causes_group_error() to functional tests

Part of blueprint decouple-nested
Change-Id: I33a9772642c6e58b4b9419330d2aa4e3f8e5cab4
1 file changed
tree: af59ea3054c8545630adb2a13b997df3dabc0bf4
  1. common/
  2. functional/
  3. scenario/