CI: List existing modules

This adds an additional test to list all modules that openbolt is aware
of. Sideeffect: makes debugging easier.

Author: bastelfreak

spec/integration/apply_spec.rb

@@ -34,7 +34,8 @@
 
   # The following are run with both *nix and Windows targets.
   shared_examples 'agentful tests' do |targets|
-    it 'runs a ruby task' do
+    it 'lists all modules & runs a ruby task' do
+      puts JSON.pretty_generate(run_cli_json(%w[module show], project: project))
       results = run_cli_json(%W[task run basic::ruby_task -t #{targets}], project: project)
 
       results['items'].each do |result|