Bug 1617684 - Run existing fission web-platform tests as tier 1; r=jm…

…aher

For all fission web-platform tests currently running on mozilla-central as tier 2,
promote to tier 1 and run on all trunk trees.

Differential Revision: https://phabricator.services.mozilla.com/D85512

taskcluster/ci/test/web-platform.yml

@@ -17,10 +17,15 @@ job-defaults:
     fission-run-on-projects:
         by-test-platform:
             linux.*64-qr/debug: ['trunk']
-            linux.*64-shippable-qr/opt: ['mozilla-central']
-            windows10-64-shippable-qr/opt: ['mozilla-central']
+            linux.*64(-shippable)?-qr/opt: ['trunk']
+            windows10-64(-shippable)?-qr/opt: ['trunk']
             default: []
-    fission-tier: 2
+    fission-tier:
+        by-test-platform:
+            linux.*64-qr/debug: 1
+            linux.*64(-shippable)?-qr/opt: 1
+            windows10-64(-shippable)?-qr/opt: 1
+            default: 2
     mozharness:
         script: web_platform_tests.py
         config:

taskcluster/taskgraph/target_tasks.py

@@ -35,7 +35,6 @@
     # Linux tasks
     r'linux-',  # hide all linux32 tasks by default - bug 1599197
     r'linux1804-32',  # hide linux32 tests - bug 1599197
-    r'linux.*web-platform-tests.*-fis-',  # hide wpt linux fission tests - bug 1610879
     # Test tasks
     r'web-platform-tests.*backlog',  # hide wpt jobs that are not implemented yet - bug 1572820
     r'-ccov/',