[Merge] ~mitchdz/ubuntu/+source/multipath-tools:mitch/mpathpersist-scsi-pg3-fix-lunar into ubuntu/+source/multipath-tools:ubuntu/lunar-devel

[Mitchell Dzurick]

FYI this MP was originally intended just for the mpathpersist fix, but included the fix for LP: #2000186 so only 1 SRU needs to be made 
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https://code.launchpad.net/~mitchdz/ubuntu/+source/multipath-tools/+git/multipath-tools/+merge/446797
Your team Ubuntu Sponsors is requested to review the proposed merge of ~mitchdz/ubuntu/+source/multipath-tools:mitch/mpathpersist-scsi-pg3-fix-lunar into ubuntu/+source/multipath-tools:ubuntu/lunar-devel.