Enable all these tests which run in native_posix in native_sim
And add native_sim as default test platform
Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
The tests test each module independently using the mock pipe,
which implements the modem_pipe API, making it compatible
with the modem modules.
The modem_ppp module is slightly different from the others
since it also interacts with the network stack. To acheive
this, a mock implementation of the PPP L2 net iface has
been implemented in the test suite for the modem_ppp.
Signed-off-by: Bjarki Arge Andreasen <baa@trackunit.com>
