Add openstack/oslo.context project to sync

Change-Id: Icafe3bdce3c14d7451dccb0ef0f0f45ae268ea43
Added collecting of rsync's logs

Rsync writes logs during syncing of mirrors
Related with https://review.fuel-infra.org/1618
(Change-Id: I35dcf82265e8c5e1456b103dcdd00dc2885589ed)

Change-Id: Iede1012e1a7ffec3ef79fb378658970686207b23