tests: fixed url of lua-nginx-module.

Author: zhuizhuhaomeng

.travis.yml

@@ -70,7 +70,7 @@ install:
  - git clone https://github.com/openresty/openresty.git ../openresty
  - git clone https://github.com/openresty/openresty-devel-utils.git
  - git clone https://github.com/simpl/ngx_devel_kit.git ../ndk-nginx-module
- - git clone https://github.com/moonming/lua-nginx-module.git ../lua-nginx-module
+ - git clone https://github.com/openresty/lua-nginx-module.git ../lua-nginx-module
  - git clone https://github.com/openresty/no-pool-nginx.git ../no-pool-nginx
  - git clone https://github.com/openresty/echo-nginx-module.git ../echo-nginx-module
  - git clone https://github.com/openresty/lua-resty-lrucache.git