travis: clone the lua-resty-core and lua-resty-lrucache repositories.

Those are required with recent versions of ngx_lua.

Author: thibaultcha

.travis.yml

@@ -49,6 +49,8 @@ install:
  - git clone https://github.com/openresty/test-nginx.git
  - git clone -b v2.1-agentzh https://github.com/openresty/luajit2.git
  - git clone https://github.com/openresty/lua-nginx-module.git ../lua-nginx-module
+ - git clone https://github.com/openresty/lua-resty-core.git ../lua-resty-core
+ - git clone https://github.com/openresty/lua-resty-lrucache.git ../lua-resty-lrucache
  - git clone https://github.com/openresty/nginx-eval-module.git ../eval-nginx-module
  - git clone https://github.com/openresty/echo-nginx-module.git ../echo-nginx-module
  - git clone https://github.com/openresty/set-misc-nginx-module.git ../set-misc-nginx-module