kola-azure: start building and testing aarch64 images

Begin building aarch64 gallery images in Azure and run all kola test on
them.

xref: coreos/coreos-assembler#4123
&& coreos/coreos-assembler#4138

Author: marmijo

config.yaml

@@ -95,7 +95,6 @@ clouds:
     test_storage_account: fedoracoreostesting
     test_storage_container: fedora-coreos-testing-image-blobs
     test_gallery: fedoracoreostestinggallery
-    test_architectures: [x86_64]
   gcp:
     bucket: fedora-coreos-cloud-image-uploads/image-import
     description: "Fedora, Fedora CoreOS ${STREAM}, ${BUILDID}, ${BASEARCH} published on ${DATE}"

jobs/kola-azure.Jenkinsfile

@@ -127,6 +127,7 @@ cosaPod(memory: "${cosa_memory_request_mb}Mi", kvm: false,
                 # it will be a no-op on gallery creation given the
                 # gallery exists in the specified region.
                 ore azure create-gallery-image --log-level=INFO         \
+                    --arch $params.ARCH                                 \
                     --azure-credentials \${AZURE_KOLA_TESTS_CONFIG}     \
                     --azure-location $region                            \
                     --resource-group $azure_testing_resource_group      \