Code review comment for lp:~pitti/platform-api/test-backend

Notes from IRC from Rick: It should stop building a *.so symlink for the test backend, and libubuntu-application-test-api1 should be libubuntu-application-api-test1 to follow naming for mirserver/mirclient/hybris backends.

Another thing to look at: the test .so only provides the sensor functions, not the whole thing; the bridge could be more clever about that and load the other symbols from the real backend; but that's supposedly not blocking the MP.