Fix trailing whitespace in multiline strings so they can be properly represented in yaml.safe_dump am: e8f78ca8f0 am: 2e9f006e9f am: 3276441a75

Change-Id: Ic7c0eed2ea460c1c3c0f0ce19e2d19f6ef2515ca
tree: b450da1c840c5a136e598a5f00c3d87e86dbe85f
  1. acts/
  2. tools/
  3. wts-acts/
  4. Android.mk
  5. OWNERS
  6. PREUPLOAD.cfg