am 551e1a76: am ebcb7c31: am 8424ec32: Merge change I0f9a53d4 into eclair

Merge commit '551e1a7608887c5bb29b65f3b4aab058fdd06c80'

* commit '551e1a7608887c5bb29b65f3b4aab058fdd06c80':
  Set metadata retriever thread group to the caller's group.