ci: revert temporary disable arm* jobs

The builder is available again.

This reverts commit 9a738fc3.

.gitlab-ci.yml

@@ -73,38 +73,38 @@ build-ppc64le:
     - ci-build
     - ppc64le
 
-# build-aarch64:
-#   extends: .build
-#   artifacts:
-#     name: MR${CI_MERGE_REQUEST_ID}_aarch64
-#   tags:
-#     - docker-alpine
-#     - ci-build
-#     - aarch64
-#
-# build-armv7:
-#   extends: .build
-#   image:
-#     name: alpinelinux/alpine-gitlab-ci:latest-armv7
-#     entrypoint: ["linux32", "sh", "-c"]
-#   artifacts:
-#     name: MR${CI_MERGE_REQUEST_ID}_armv7
-#   tags:
-#     - docker-alpine
-#     - ci-build
-#     - armv7
-#
-# build-armhf:
-#   extends: .build
-#   image:
-#     name: alpinelinux/alpine-gitlab-ci:latest-armhf
-#     entrypoint: ["linux32", "sh", "-c"]
-#   artifacts:
-#     name: MR${CI_MERGE_REQUEST_ID}_armhf
-#   tags:
-#     - docker-alpine
-#     - ci-build
-#     - armhf
+build-aarch64:
+  extends: .build
+  artifacts:
+    name: MR${CI_MERGE_REQUEST_ID}_aarch64
+  tags:
+    - docker-alpine
+    - ci-build
+    - aarch64
+
+build-armv7:
+  extends: .build
+  image:
+    name: alpinelinux/alpine-gitlab-ci:latest-armv7
+    entrypoint: ["linux32", "sh", "-c"]
+  artifacts:
+    name: MR${CI_MERGE_REQUEST_ID}_armv7
+  tags:
+    - docker-alpine
+    - ci-build
+    - armv7
+
+build-armhf:
+  extends: .build
+  image:
+    name: alpinelinux/alpine-gitlab-ci:latest-armhf
+    entrypoint: ["linux32", "sh", "-c"]
+  artifacts:
+    name: MR${CI_MERGE_REQUEST_ID}_armhf
+  tags:
+    - docker-alpine
+    - ci-build
+    - armhf
 
 build-riscv64-emulated:
   extends: .build