fix bug in p2_repos name for milestones
fix bug in p2_repos name for milestones


Former-commit-id: cebb82977902b7b16544298461e8aadd5f585164
bfg-repo-cleaner-demos/eclipselink.runtime-bfg-strip-big-blobs,bfg-repo-cleaner-demos/eclipselink.runtime-bfg-strip-big-blobs,bfg-repo-cleaner-demos/eclipselink.runtime-bfg-strip-big-blobs