UT: Make unit test run for all existing and future families

[Hish15]

Adding a new family in UT is not efficient.
We don't want to specify families on each test nor having to add specific family files in all tests.

One solution could be to use the template provided with the cmsis/Hal for each family at test run time.

[xanthio]

I guess #342 do the job

[Hish15]

If I'm not mistake, #342 does run for all families on cmake/stm32/.cmake
It does not adress the nor having to add specific family files in all tests. I cannot close this yet then