[CQ] Add new triggered win trybots to CQ.

TBR=sergiyb@chromium.org,tandrii@chromium.org
NOTRY=true
BUG=chromium:561530
LOG=n

Review URL: https://codereview.chromium.org/1497743002

Cr-Commit-Position: refs/heads/master@{#32568}

PRESUBMIT.py

@@ -287,10 +287,10 @@ def GetPreferredTryMasters(project, change):
       'v8_linux64_rel': set(['defaulttests']),
       'v8_linux64_asan_rel': set(['defaulttests']),
       'v8_linux64_avx2_rel': set(['defaulttests']),
-      'v8_win_rel': set(['defaulttests']),
+      'v8_win_rel_ng': set(['defaulttests']),
       'v8_win_compile_dbg': set(['defaulttests']),
       'v8_win_nosnap_shared_compile_rel': set(['defaulttests']),
-      'v8_win64_rel': set(['defaulttests']),
+      'v8_win64_rel_ng': set(['defaulttests']),
       'v8_mac_rel': set(['defaulttests']),
       'v8_linux_arm_rel': set(['defaulttests']),
       'v8_linux_arm64_rel': set(['defaulttests']),

infra/config/cq.cfg

@@ -47,10 +47,10 @@ verifiers {
       }
       builders { name: "v8_win_compile_dbg" }
       builders { name: "v8_win_nosnap_shared_compile_rel" }
-      builders { name: "v8_win_rel" }
+      builders { name: "v8_win_rel_ng" }
       builders {
-        name: "v8_win_rel_ng"
-        experiment_percentage: 30
+        name: "v8_win_rel_ng_triggered"
+        triggered_by: "v8_win_rel_ng"
       }
     }
   }