We always use the same directory for terraform fixtures, so it's quite
easy to figure out its path from a pytest fixture by inspecting the
stack. This commit implements this functionality and decreases the
amount of boilerplate needed to write a test.
(Ported from fast)
* first implementation
* minimal output
* split service perimeters in regular and bridge
* tests and fixes
* new vpc-sc implementation
* remove providers file used for testing
* remove provider used during development