[CI/CD] Use artifacts

.gitlab-ci.yml

+robotpkg-pinocchio-tutorials-16.04:
+  image: ubuntu:16.04
+  before_script:
+    - apt-get update -qq
+    - apt-get install -qqy asciidoc cmake g++ source-highlight
+  script:
+    - cmake .
+    - make
+  artifacts:
+    paths:
+      - html
+    expire_in: 1 day