travis-ci: upgrade dist of travis-ci to ubuntu bionic. (#365)

Author: xiaocang

.travis.yml

@@ -1,5 +1,5 @@
 sudo: required
-dist: trusty
+dist: bionic
 
 branches:
   only:
@@ -101,4 +101,4 @@ script:
   - ngx-build $NGINX_VERSION --with-ipv6 --with-http_realip_module --with-http_ssl_module --with-pcre-jit --with-cc-opt="-I$OPENSSL_INC -I$PCRE_INC" --with-ld-opt="-L$OPENSSL_LIB -Wl,-rpath,$OPENSSL_LIB -L$PCRE_LIB -Wl,-rpath,$PCRE_LIB" --add-module=../ndk-nginx-module --add-module=../echo-nginx-module --add-module=../set-misc-nginx-module --add-module=../headers-more-nginx-module --add-module=../lua-nginx-module --with-debug --with-stream_ssl_module --with-stream --with-ipv6 --add-module=../stream-lua-nginx-module > build.log 2>&1 || (cat build.log && exit 1)
   - nginx -V
   - ldd `which nginx`|grep -E 'luajit|ssl|pcre'
-  - prove -Itest-nginx/lib -j$JOBS -r t
+  - prove -I. -Itest-nginx/lib -j$JOBS -r t

t/ssl-session-fetch.t

@@ -492,12 +492,15 @@ qr/content_by_lua\(nginx\.conf:\d+\):\d+: CONNECTED/
 qr/failed to resume session: failed to de-serialize session|ssl_session_(fetch|store)_by_lua_block:\d+: session id: [a-fA-F\d]+/s
 --- grep_error_log_out eval
 [
-qr/^ssl_session_store_by_lua_block:\d+: session id: [a-fA-F\d]+$/s,
 qr/^ssl_session_fetch_by_lua_block:\d+: session id: [a-fA-F\d]+
 failed to resume session: failed to de-serialize session
 ssl_session_store_by_lua_block:\d+: session id: [a-fA-F\d]+
 $/s,
-qr/ssl_session_fetch_by_lua_block:\d+: session id: [a-fA-F\d]+
+qr/^ssl_session_fetch_by_lua_block:\d+: session id: [a-fA-F\d]+
+failed to resume session: failed to de-serialize session
+ssl_session_store_by_lua_block:\d+: session id: [a-fA-F\d]+
+$/s,
+qr/^ssl_session_fetch_by_lua_block:\d+: session id: [a-fA-F\d]+
 failed to resume session: failed to de-serialize session
 ssl_session_store_by_lua_block:\d+: session id: [a-fA-F\d]+
 $/s,
@@ -507,6 +510,7 @@ $/s,
 [alert]
 [emerg]
 [error]
+--- timeout: 5
 
 
 

t/stream/ssl.t

@@ -1821,6 +1821,7 @@ qr/subject=\/?C(?<eq>\s?=\s?)US(?<sep>\/|,\s)ST\k<eq>California\k<sep>L\k<eq>San
 --- no_error_log
 [error]
 [alert]
+--- timeout: 5