Add test harness to execute s3-tests

Also add Travis configuration.

.travis.yml

@@ -1 +1,5 @@
 language: java
+before_install:
+ - sudo apt-get update -qq
+ - sudo apt-get install -qq python-pip python-virtualenv libevent-dev
+after_script: src/test/resources/run-s3-tests.sh

src/test/resources/run-s3-tests.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+set -o errexit
+set -o nounset
+
+S3PROXY_BIN="${PWD}/target/s3proxy"
+S3PROXY_PORT="8081"
+export S3TEST_CONF="${PWD}/src/test/resources/s3-tests.conf"
+
+# configure s3-tests
+pushd s3-tests
+./bootstrap
+popd
+
+# launch S3Proxy using HTTP and a fixed port
+sed "s,^\(s3proxy.endpoint\)=.*,\1=http://127.0.0.1:${S3PROXY_PORT}," \
+        < src/test/resources/s3proxy.conf > target/s3proxy.conf
+$S3PROXY_BIN --properties target/s3proxy.conf &
+S3PROXY_PID=$!
+
+# wait for S3Proxy to start
+for i in $(seq 30);
+do
+    if exec 3<>"/dev/tcp/localhost/${S3PROXY_PORT}";
+    then
+        exec 3<&-  # Close for read
+        exec 3>&-  # Close for write
+        break
+    fi
+    sleep 1
+done
+
+# execute s3-tests
+pushd s3-tests
+./virtualenv/bin/nosetests -a '!fails_on_s3proxy'
+EXIT_CODE=$?
+popd
+
+# clean up and return s3-tests exit code
+kill $S3PROXY_PID
+exit $EXIT_CODE

src/test/resources/s3-tests.conf

@@ -0,0 +1,40 @@
+[DEFAULT]
+## this section is just used as default for all the "s3 *"
+## sections, you can place these variables also directly there
+
+## replace with e.g. "localhost" to run against local software
+host = 127.0.0.1
+
+## uncomment the port to use something other than 80
+port = 8081
+
+## say "no" to disable TLS
+is_secure = no
+
+[fixtures]
+## all the buckets created will start with this prefix;
+## {random} will be filled with random characters to pad
+## the prefix to 30 characters long, and avoid collisions
+bucket prefix = s3proxy-{random}-
+
+[s3 main]
+## the tests assume two accounts are defined, "main" and "alt".
+
+## user_id is a 64-character hexstring
+user_id = 0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef
+
+## display name typically looks more like a unix login, "jdoe" etc
+display_name = youruseridhere
+
+## replace these with your access keys
+access_key = local-identity
+secret_key = local-credential
+
+[s3 alt]
+## another user account, used for ACL-related tests
+user_id = 56789abcdef0123456789abcdef0123456789abcdef0123456789abcdef01234
+display_name = john.doe
+## the "alt" user needs to have email set, too
+email = john.doe@example.com
+access_key = local-identity
+secret_key = local-credential