Fixed failing integration test in CI

The augeas Ruby gem 0.5.0 from rubygems.org is not compatible with Ruby 3.3
but the preinstalled RPM package is patched in OBS.
Confugure the bundler to use the system gems.

setup-services.sh

@@ -116,7 +116,13 @@ fi
       sed -e '/gemspec/a gem "ruby-dbus", path: "/checkout-ruby-dbus"' -i Gemfile
   fi
 
-  bundle config set --local path 'vendor/bundle'
+  if [ -n "$CI" ]; then
+    # in CI reuse the pre-installed system gems from RPMs
+    bundle config set --local disable_shared_gems 0
+  else
+    bundle config set --local path 'vendor/bundle'
+  fi
+
   bundle install
 )