Bumps Consul to release version 0.8.1.

library/consul

@@ -1,4 +1,4 @@
 # maintainer: James Phillips <[email protected]> (@slackpad)
 
-latest: git://github.com/hashicorp/docker-consul@12887eb9e0333e49909985b3523ff69c61099e70 0.X
-0.8.0: git://github.com/hashicorp/docker-consul@12887eb9e0333e49909985b3523ff69c61099e70 0.X
+latest: git://github.com/hashicorp/docker-consul@ab9d553087fffb25ebabb41c38e5cea3deef1019 0.X
+0.8.1: git://github.com/hashicorp/docker-consul@ab9d553087fffb25ebabb41c38e5cea3deef1019 0.X