Merge branch 'devel' into 'master'

Fully qualify image names

See merge request puppet-infra/shared-ci-piplines!84

.gitlab-ci.yml

 ---
 lint:pipelines:
-  image: ruby
+  image: docker.io/library/ruby
   script:
     - ./lint.sh

puppet-byxlos-production-pipeline.yaml

@@ -18,7 +18,7 @@ variables:
 pdk-validate:
   stage: puppet
   image:
-    name: puppet/pdk:3.4.0.1
+    name: docker.io/puppet/pdk:3.4.0.1
     pull_policy: if-not-present
   script:
     - pdk validate --parallel --format=junit:validate.xml --format=text

puppet-module-pipeline.yaml

@@ -18,7 +18,7 @@ variables:
 pdk-validate:
   stage: puppet
   image: &PDK
-    name: puppet/pdk:3.4.0.1
+    name: docker.io/puppet/pdk:3.4.0.1
     pull_policy: if-not-present
   before_script: &pdk-workaround
     - |