Update mb_config.pyl for copies of WebKit Linux Trusty *.

Bug: 790286,790294,790309
Change-Id: I78efe19f06591cb2964068ab290a5f1b6856b65b
Reviewed-on: https://chromium-review.googlesource.com/c/1330357Reviewed-by: Stephen Martinis <martiniss@chromium.org>
Commit-Queue: Jao-ke Chin-Lee <jchinlee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#607063}

tools/mb/mb_config.pyl

@@ -384,6 +384,9 @@
       'Linux MSan Builder': 'msan_release_bot',
       'Linux TSan Builder': 'tsan_disable_nacl_release_bot',
       'Mac ASan 64 Builder': 'asan_minimal_symbols_disable_nacl_release_bot_dcheck_always_on',
+      'WebKit Linux Trusty ASAN': 'asan_lsan_release_bot',
+      'WebKit Linux Trusty Leak': 'release_bot',
+      'WebKit Linux Trusty MSAN': 'msan_release_bot',
       'win-asan': 'asan_clang_fuzzer_static_v8_heap_minimal_symbols_release',
     },