Move testing pipelines into a test directory and reuse test scaffolding
so that they can be used to test multiple components on multiple target
with multiples configs.
Test topology scafolding are now pre-processed using a script to generate
the ALSA conf format with the various changes for each test case.
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>