scripts/ci: update gitlab-runner playbook to handle CentOS

This was broken when we moved to using the pre-built packages as we
didn't take care to ensure we used RPMs where required.

NB: I could never get this to complete on my test setup but I suspect
this was down to network connectivity and timeouts while downloading.

Fixes: 69c4befba1 (scripts/ci: update gitlab-runner playbook to use latest runner)
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230315174331.2959-5-alex.bennee@linaro.org>

scripts/ci/setup/gitlab-runner.yml

@@ -48,13 +48,29 @@
     - debug:
         msg: gitlab-runner arch is {{ gitlab_runner_arch }}
 
-    - name: Download the matching gitlab-runner
+    - name: Download the matching gitlab-runner (DEB)
       get_url:
         dest: "/root/"
         url: "https://gitlab-runner-downloads.s3.amazonaws.com/latest/deb/gitlab-runner_{{ gitlab_runner_arch }}.deb"
+      when:
+        - ansible_facts['distribution'] == 'Ubuntu'
+
+    - name: Download the matching gitlab-runner (RPM)
+      get_url:
+        dest: "/root/"
+        url: "https://gitlab-runner-downloads.s3.amazonaws.com/latest/rpm/gitlab-runner_{{ gitlab_runner_arch }}.rpm"
+      when:
+        - ansible_facts['distribution'] == 'CentOS'
 
-    - name: Install gitlab-runner via package manager
+    - name: Install gitlab-runner via package manager (DEB)
       apt: deb="/root/gitlab-runner_{{ gitlab_runner_arch }}.deb"
+      when:
+        - ansible_facts['distribution'] == 'Ubuntu'
+
+    - name: Install gitlab-runner via package manager (RPM)
+      yum: name="/root/gitlab-runner_{{ gitlab_runner_arch }}.rpm"
+      when:
+        - ansible_facts['distribution'] == 'CentOS'
 
     - name: Register the gitlab-runner
       command: "/usr/bin/gitlab-runner register --non-interactive --url {{ gitlab_runner_server_url }} --registration-token {{ gitlab_runner_registration_token }} --executor shell --tag-list {{ ansible_facts[\"architecture\"] }},{{ ansible_facts[\"distribution\"]|lower }}_{{ ansible_facts[\"distribution_version\"] }} --description '{{ ansible_facts[\"distribution\"] }} {{ ansible_facts[\"distribution_version\"] }} {{ ansible_facts[\"architecture\"] }} ({{ ansible_facts[\"os_family\"] }})'"