test: add config for GitLab-CI

.gitlab-ci.yml

+# A pipeline is composed of independent jobs that run scripts, grouped into stages.
+# Stages run in sequential order, but jobs within stages run in parallel.
+#
+# For more information, see: https://docs.gitlab.com/ee/ci/yaml/index.html#stages
+
+stages:          # List of stages for jobs, and their order of execution
+  - test
+
+default:
+  before_script:
+    - source /opt/molecule/bin/activate
+    - ansible --version
+    - molecule --version
+
+test-job:
+  stage: test
+  tags:
+    - "shell"
+  script:
+    # make sure that Ansible Vaults are present and can be decrypted
+    - echo "${VAULT_INSTALL_COMMON}" > ../lza_install_common.pass
+    - export ANSIBLE_VAULT_PASSWORD_FILE=../lza_install_common.pass
+    - rm -rf ../ansible_vaults/
+    - git clone https://gitlab+deploy-token-25:${VAULT_ACCESS_TOKEN}@git.slub-dresden.de/slub-referat-2-3/ansible_vaults.git ../ansible_vaults/; \
+    # run Molecule tests
+    - molecule syntax --scenario-name default
+    - molecule lint --scenario-name default
+    - molecule create --scenario-name default
+    - molecule converge --scenario-name default
+    - molecule idempotence --scenario-name default
+      #- molecule verify --scenario-name default
+    - molecule destroy --scenario-name default