[tests/data] split addc test into two
[tests/data] split addc test into two

according to comments they really are two different tests


Former-commit-id: 7c903e3f8eef3dc06406e2fa48f2603589d3690e
Former-commit-id: 6e9dc5e29cdc1df3d9dba9f0de78b96c5a1bd404
pygeo/pycmbs,pygeo/pycmbs