Adding 0.8.1, updating latest

library/vault

@@ -6,4 +6,5 @@
 0.7.2: git://github.com/hashicorp/docker-vault@02af9417ae42bf6290b4b36c2188b1836f1017a8 0.7.2
 0.7.3: git://github.com/hashicorp/docker-vault@02af9417ae42bf6290b4b36c2188b1836f1017a8 0.7.3
 0.8.0: git://github.com/hashicorp/docker-vault@d1cbdce2b531e9223356efb14e828afa556e1f70 0.8.0
-latest: git://github.com/hashicorp/docker-vault@d1cbdce2b531e9223356efb14e828afa556e1f70 0.8.0
+0.8.1: git://github.com/hashicorp/docker-vault@9ddc187d94f68f2572e4d3b1e733c98c661d628b 0.8.1
+latest: git://github.com/hashicorp/docker-vault@9ddc187d94f68f2572e4d3b1e733c98c661d628b 0.8.1