Audio V4: Move common test code in common folder

The previous patch made the test independent of the HAL version
As a result, move them in the version common folder.

Note that this patch is separated from the previous patch to ease
review.

Bug: 38184704
Test: compile
Change-Id: I98a46eb0b88ea786656200ab613afd2d36ed222d
Signed-off-by: Kevin Rocard <krocard@google.com>
diff --git a/audio/common/all-versions/test/OWNERS b/audio/common/all-versions/test/OWNERS
new file mode 100644
index 0000000..6a26ae7
--- /dev/null
+++ b/audio/common/all-versions/test/OWNERS
@@ -0,0 +1,2 @@
+yim@google.com
+zhuoyao@google.com