Bug 1621252 - Move Fenix Raptor tests to tier 1 (#9217)

Co-authored-by: Florin Strugariu <bebe@mozilla.ro>
Co-authored-by: Johan Lorenzo <jlorenzo@mozilla.com>

taskcluster/ci/raptor/kind.yml

@@ -37,7 +37,7 @@ job-defaults:
     run-on-tasks-for: []
     treeherder:
         kind: test
-        tier: 2
+        tier: 1
         platform:
             by-abi:
                 arm64-v8a: android-hw-p2-8-0-android-aarch64/opt

taskcluster/ci/signing/kind.yml

@@ -73,4 +73,4 @@ job-template:
                 default: Bs
         kind: build
         platform: android-all/opt
-        tier: 2
+        tier: 1