travis-ci: several improvements

(*) move package management under "apt" plugin
(*) use nginx-1.11.2 instead of 1.10.X
(*) use util/build.sh

Author: chipitsine

.travis.yml

@@ -9,34 +9,43 @@ compiler:
   - gcc
   - clang
 
+addons:
+  apt:
+    packages:
+    - axel
+    - cpanminus
+    - libluajit-5.1-dev
+    - libgd-dev
+    - libpcre3-dev
+
+cache:
+  apt: true
+
 env:
   global:
     - LUAJIT_LIB=/usr/lib64/libluajit-5.1.so
     - LUAJIT_INC=/usr/include/luajit-2.0
     - LUA_INCLUDE_DIR=/usr/include/luajit-2.0
     - LUA_CMODULE_DIR=/lib
   matrix:
-    - NGINX_VERSION=1.10.0
+    - NGINX_VERSION=1.11.2
     - NGINX_VERSION=1.9.15
 
 before_install:
-  - sudo apt-get install -qq -y cpanminus libluajit-5.1-dev libgd-dev libpcre3-dev
   - sudo cpanm --notest Test::Nginx > build.log 2>&1 || (cat build.log && exit 1)
 
 install:
-  - wget http://nginx.org/download/nginx-${NGINX_VERSION}.tar.gz
-  - git clone https://github.com/openresty/lua-nginx-module.git
-  - git clone https://github.com/openresty/echo-nginx-module.git
-  - git clone https://github.com/simpl/ngx_devel_kit.git
+  - git clone https://github.com/openresty/openresty.git ../openresty
+  - git clone https://github.com/openresty/no-pool-nginx.git ../no-pool-nginx
+  - git clone https://github.com/openresty/nginx-devel-utils.git
+  - git clone https://github.com/openresty/lua-nginx-module.git ../lua-nginx-module
+  - git clone https://github.com/openresty/echo-nginx-module.git ../echo-nginx-module
+  - git clone https://github.com/simpl/ngx_devel_kit.git ../ndk-nginx-module
   - git clone https://github.com/openresty/sregex.git
 
 script:
   - cd sregex && sudo make PREFIX=/usr install && cd ..
-  - tar xzf nginx-${NGINX_VERSION}.tar.gz
-  - cd nginx-${NGINX_VERSION}/
-  -  ./configure --with-debug --with-pcre --with-pcre-jit --with-ipv6 --with-poll_module --add-module=.. --add-module=../lua-nginx-module --add-module=../echo-nginx-module > build.log 2>&1 || (cat build.log && exit 1)
-  - make -j2 > build.log 2>&1 || (cat build.log && exit 1)
-  - export PATH=$PATH:`pwd`/objs
-  - cd ..
+  - export PATH=$PWD/work/nginx/sbin:$PWD/nginx-devel-utils:$PATH
+  - sh util/build.sh $NGINX_VERSION > build.log 2>&1 || (cat build.log && exit 1)
   - nginx -V
-  - prove -lv t
+  - prove -r t