gitlab-ci: install sudo

Required by the scripts/run-script.sh

Changelog: None

Signed-off-by: Mirza Krak <mirza.krak@northern.tech>

.gitlab-ci.yml

@@ -55,7 +55,7 @@ test_acceptance:
     - docker version
     # Install dependencies
     - apk --update --no-cache add bash wget git util-linux mtools python
-      py-pip gcc python2-dev libffi-dev libc-dev openssl-dev make
+      py-pip gcc python2-dev libffi-dev libc-dev openssl-dev make sudo
     - pip install "pytest>=3.0" "Fabric>=1.13.0, <2" pytest-html
     # Load image under test
     - export IMAGE_NAME=$DOCKER_REPOSITORY:pr