Bug 1352113 - Shippable Builds - Linux32 Tests. r=jmaher

Differential Revision: https://phabricator.services.mozilla.com/D22233

--HG--
extra : moz-landing-system : lando

taskcluster/ci/test/test-platforms.yml

@@ -29,6 +29,11 @@ linux32-nightly/opt:
     test-sets:
         - linux32-tests
         - linux32-opt-tests
+linux32-shippable/opt:
+    build-platform: linux-shippable/opt
+    test-sets:
+        - linux32-tests
+        - linux32-opt-tests
 linux32-devedition/opt:
     build-platform: linux-devedition-nightly/opt
     test-sets:

taskcluster/taskgraph/transforms/tests.py

@@ -656,6 +656,7 @@ def set_tier(config, tests):
                                          'linux32/debug',
                                          'linux32-nightly/opt',
                                          'linux32-devedition/opt',
+                                         'linux32-shippable/opt',
                                          'linux64/opt',
                                          'linux64-nightly/opt',
                                          'linux64/debug',