Revert of [CQ] Remove experimental bot temporarily. (patchset #1 id:1 of...

Revert of [CQ] Remove experimental bot temporarily. (patchset #1 id:1 of https://codereview.chromium.org/2411283002/ )

Reason for revert:
Root cause fixed.

Original issue's description:
> [CQ] Remove experimental bot temporarily.
>
> BUG=chromium:655033,v8:5502
> NOTRY=true
> NOPRESUBMIT=true
> TBR=tandrii@chromium.org
>
> Committed: https://crrev.com/f994fcb10ed9ebc09a3544221db8d2fc121c6e98
> Cr-Commit-Position: refs/heads/master@{#40193}

TBR=tandrii@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:655033,v8:5502

Review-Url: https://codereview.chromium.org/2412073002
Cr-Commit-Position: refs/heads/master@{#40203}

infra/config/cq.cfg

@@ -102,10 +102,10 @@ verifiers {
         name: "v8_linux_blink_rel"
         experiment_percentage: 100
       }
-      #builders {
-      #  name: "v8_linux64_sanitizer_coverage_rel"
-      #  experiment_percentage: 100
-      #}
+      builders {
+        name: "v8_linux64_sanitizer_coverage_rel"
+        experiment_percentage: 100
+      }
     }
     buckets {
       name: "master.tryserver.chromium.win"