Bug 1797891 - Make some tasks really only run on m-c or autoland. r=jcristau

As of bug 1791454 m-c and autoland both also imply the toolchains
branch, which doesn't work for every kind of task, some of which are
really meant to only run on those branches.

Differential Revision: https://phabricator.services.mozilla.com/D164149

taskcluster/ci/build/android-stuff.yml

@@ -18,7 +18,7 @@ android-geckoview-docs/opt:
         kind: build
         tier: 2
         symbol: A(gv-docs)
-    run-on-projects: [mozilla-central]
+    run-on-projects: [mozilla-central-only]
     worker-type: b-linux-gcp
     worker:
         docker-image: {in-tree: android-build}

taskcluster/ci/github-sync/kind.yml

@@ -16,7 +16,7 @@ transforms:
 job-defaults:
     attributes:
         retrigger: true
-    run-on-projects: ['mozilla-central']
+    run-on-projects: ['mozilla-central-only']
     worker-type: b-linux-gcp
     treeherder:
         platform: other/opt

taskcluster/ci/source-test/doc.yml

@@ -42,7 +42,7 @@ upload:
         symbol: doc(upload)
         kind: test
         tier: 2
-    run-on-projects: [mozilla-central]
+    run-on-projects: [mozilla-central-only]
     worker-type: t-linux-xlarge-source
     worker:
         docker-image: {in-tree: "lint"}

taskcluster/ci/source-test/shadow-scheduler.yml

@@ -17,7 +17,7 @@ job-defaults:
     treeherder:
         kind: other
         tier: 3
-    run-on-projects: ['autoland']
+    run-on-projects: ['autoland-only']
     run:
         using: mach
         mach: taskgraph optimized -v --json -p task-id=$DECISION_TASK_ID --output-file /builds/worker/optimized-tasks.json

taskcluster/gecko_taskgraph/util/attributes.py

@@ -5,7 +5,6 @@
 
 import re
 
-
 INTEGRATION_PROJECTS = {
     "autoland",
 }
@@ -53,7 +52,9 @@ RUN_ON_PROJECT_ALIASES = {
     "release": lambda project: (project in RELEASE_PROJECTS or project == "toolchains"),
     "trunk": lambda project: (project in TRUNK_PROJECTS or project == "toolchains"),
     "autoland": lambda project: project in ("autoland", "toolchains"),
+    "autoland-only": lambda project: project == "autoland",
     "mozilla-central": lambda project: project in ("mozilla-central", "toolchains"),
+    "mozilla-central-only": lambda project: project == "mozilla-central",
 }
 
 _COPYABLE_ATTRIBUTES = (