BUILD/MEDIUM: Fix tests' prerequisites (#57)

Author: gdubicki

.travis.yml

@@ -2,13 +2,13 @@ language: go
 go:
 - 1.x
 sudo: false
-install:
-  - wget http://www.haproxy.org/download/2.0/src/haproxy-2.0.14.tar.gz
-  - tar -zxvf haproxy-2.0.14.tar.gz
-  - pushd haproxy-2.0.14 && make TARGET=linux-glibc USE_OPENSSL=1 USE_ZLIB=1 USE_PCRE=1 && sudo make install && popd
 before_script:
   - sudo wget https://github.com/haproxytech/dataplaneapi/releases/download/v1.2.5/dataplaneapi -O /usr/local/bin/dataplaneapi
   - sudo chmod +x /usr/local/bin/dataplaneapi
+  - sudo apt-get install -y software-properties-common
+  - sudo add-apt-repository -y ppa:vbernat/haproxy-2.0
+  - sudo apt-get update
+  - sudo apt-get install -y haproxy=2.0.\*
   - haproxy -vv
 script: make travis
 addons: