travis: run tests pointing to rackspace and memset swift APIs

Ensuring we run our tests against real servers should help improve their
reliability and also help finding errors that only happen in the real
world.

Tests are set as allowed failures for now to see how flaky they become.
More cloud providers might be added in the future.

.travis.yml

@@ -5,10 +5,26 @@ go:
   - 1.1.2
   - 1.2.2
   - 1.3.3
-  - 1.4.2
-  - 1.5.1
-  - tip
+  - 1.4.3
+  - 1.5.4
+  - 1.6.4
+  - 1.7.5
+  - 1.8
+  - master
 
+matrix:
+  include:
+  - go: 1.8
+    env: TEST_REAL_SERVER=rackspace
+  - go: 1.8
+    env: TEST_REAL_SERVER=memset
+  allow_failures:
+  - go: 1.8
+    env: TEST_REAL_SERVER=rackspace
+  - go: 1.8
+    env: TEST_REAL_SERVER=memset
+install: go test -i ./...
 script:
   - test -z "$(go fmt ./...)"
   - go test
+  - ./travis_realserver.sh

travis_realserver.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+set -e
+
+if [ ! "${TRAVIS_BRANCH}" = "master" ]; then
+    exit 0
+fi
+
+if [ "${TEST_REAL_SERVER}" = "rackspace" ] && [ ! -z "${RACKSPACE_APIKEY}" ]; then
+    echo "Running tests pointing to Rackspace"
+    export SWIFT_API_KEY=$RACKSPACE_APIKEY
+    export SWIFT_API_USER=$RACKSPACE_USER
+    export SWIFT_AUTH_URL=$RACKSPACE_AUTH
+    go test ./...
+fi
+
+if [ "${TEST_REAL_SERVER}" = "memset" ] && [ ! -z "${MEMSET_APIKEY}" ]; then
+    echo "Running tests pointing to Memset"
+    export SWIFT_API_KEY=$MEMSET_APIKEY
+    export SWIFT_API_USER=$MEMSET_USER
+    export SWIFT_AUTH_URL=$MEMSET_AUTH
+    go test
+fi