travis: updated branch for openresty.

Author: jiahao

.travis.yml

@@ -57,7 +57,7 @@ install:
   - if [ ! -f download-cache/openssl-$OPENSSL_VER.tar.gz ]; then wget -P download-cache https://www.openssl.org/source/openssl-$OPENSSL_VER.tar.gz || wget -P download-cache https://www.openssl.org/source/old/${OPENSSL_VER//[a-z]/}/openssl-$OPENSSL_VER.tar.gz; fi
   - git clone https://github.com/openresty/openresty-devel-utils.git
   - git clone https://github.com/openresty/lua-cjson.git
-  - git clone -b bump-1.27.0 https://github.com/xiaocang/openresty.git ../openresty
+  - 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/simpl/ngx_devel_kit.git ../ndk-nginx-module
   - git clone https://github.com/openresty/mockeagain.git