Build both amd64 and aarch64 images

Add build axes for different architectures.

Change-Id: Ibd96cda31152b95ba9694a8eea726c01be6f11cc
Signed-off-by: Saheer Babu <saheer.babu@arm.com>
diff --git a/ci-dockerfiles-deployment.yaml b/ci-dockerfiles-deployment.yaml
index 2b0945a..bbef8ea 100644
--- a/ci-dockerfiles-deployment.yaml
+++ b/ci-dockerfiles-deployment.yaml
@@ -1,6 +1,6 @@
 - job:
     name: ci-dockerfiles-deployment
-    project-type: freestyle
+    project-type: matrix
     defaults: global
     properties:
         - authorization:
@@ -16,6 +16,13 @@
             blocking-jobs:
               - "ci-docker*"
             block-level: 'NODE'
+    axes:
+      - axis:
+          name: label
+          type: slave
+          values:
+            -  build-amd64-private
+            -  build-aarch64-private
     disabled: false
     node: build-amd64-private
     concurrent: false
diff --git a/ci-dockerfiles-sanity-check.yaml b/ci-dockerfiles-sanity-check.yaml
index 11611c0..94f88d9 100644
--- a/ci-dockerfiles-sanity-check.yaml
+++ b/ci-dockerfiles-sanity-check.yaml
@@ -1,6 +1,6 @@
 - job:
     name: ci-dockerfiles-sanity-check
-    project-type: freestyle
+    project-type: matrix
     defaults: global
     properties:
         - authorization:
@@ -18,6 +18,13 @@
             blocking-jobs:
               - "ci-docker*"
             block-level: 'NODE'
+    axes:
+      - axis:
+          name: label
+          type: slave
+          values:
+            -  build-amd64-private
+            -  build-aarch64-private
     disabled: false
     node: build-amd64-private
     concurrent: false