Upgrade to Vault 1.1.0.

see https://github.com/hashicorp/vault/blob/v1.1.0/CHANGELOG.md

Closes gh-306.
Original pull request: gh-306.

.travis.yml

@@ -26,6 +26,7 @@ env:
     - VAULT_VER=0.10.3
     - VAULT_VER=0.11.5
     - VAULT_VER=1.0.3
+    - VAULT_VER=1.1.0
 
 before_install:
   - sed -i.bak -e 's|https://nexus.codehaus.org/snapshots/|https://oss.sonatype.org/content/repositories/codehaus-snapshots/|g' ~/.m2/settings.xml

src/test/bash/install_vault.sh

@@ -6,7 +6,7 @@
 ###########################################################################
 
 
-VAULT_VER="${VAULT_VER:-1.0.3}"
+VAULT_VER="${VAULT_VER:-1.1.0}"
 UNAME=$(uname -s |  tr '[:upper:]' '[:lower:]')
 VAULT_ZIP="vault_${VAULT_VER}_${UNAME}_amd64.zip"
 IGNORE_CERTS="${IGNORE_CERTS:-no}"