Simple emulator for DBS3. Incomplete.
Adapt to full lumi list returned in maskedBlocks
New tests for lumi masks, remove existing which fails with DBS2 emulator
Switch to real DBS, not emulator. Switch to a smaller RAW dataset
Merge branch 'lumilist_and_dbs3' of https://github.com/ericvaandering/WMCore into ericvaandering-lumilist_and_dbs3
Merge branch 'ericvaandering-lumilist_and_dbs3'