logd: consolidate test code am: 60a08d8cad

Original change: https://android-review.googlesource.com/c/platform/system/logging/+/1504211

Change-Id: I63f4aa662832ab741b8c22d07face7dcce3f8f0e
tree: 60359eac16813b800f2c80d50994ea28db07f429
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/
  5. OWNERS
  6. PREUPLOAD.cfg
  7. TEST_MAPPING