Revert "Revert "[autotest] Save host labels information to metaDB""

This reverts commit 22e873896ce087265403f996b227453669d3b22f.

Change-Id: I4dbfbb5ea67860f4bfd86eb372c108f0b6e5dd58
Reviewed-on: https://chromium-review.googlesource.com/222103
Reviewed-by: Dan Shi <dshi@chromium.org>
Tested-by: Dan Shi <dshi@chromium.org>
Commit-Queue: Dan Shi <dshi@chromium.org>
2 files changed