Upgrade to 7.3.1 (#15)
Upgrade to 7.3.1 (#15)

Change-Id: I024e3113ffb5dd818b200c186d2bf45c6083d3d5
Signed-off-by: David Pursehouse <e7b5c6a4a3dbaca972851f8c075e19915752593f@collab.net>
blacktop/docker-elasticsearch-alpine