* feat: add support to a public access to cloudsql-instance
* doc: update cloudsql-instance doc changing the ipv4_enabled parameter description
* test: fix assertion test to ipv4_enabled
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)