Add the first gitlab ci YAML

This is the first test of connecting gitlab CI to the github
repository.

Signed-off-by: Major Hayden <major@redhat.com>

.gitlab-ci.yml

@@ -0,0 +1,8 @@
+stages:
+  - test
+
+unit_test:
+  stage: test
+  image: python:3.7-alpine
+  script:
+    - python3 -m unittest test.test_osbuild