ci: run "id" in query stage

Some images use a non-root user. Having access to this information in
the logs may help debug issues related to file owneship of cache
elements.

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@huawei.com>

.gitlab-ci.yml

@@ -85,6 +85,7 @@ reuse:
       }
 
     - gl_section_open_collapsed system_info "Querying system information"
+    - id
     - uname -a
     - cat /etc/os-release
     - free -m