Fix verify-rpm job not running

The packaging-verify-rpm-master job hasn't run for more than three months.

https://jenkins.opendaylight.org/releng/view/packaging/job/packaging-verify-rpm-master/

It should be triggered each time a file changes in the integration/packaging/packages/ directory.

triggers:

• gerrit:
  server-name: '{gerrit-server-name}'
  trigger-on:
• comment-added-contains-event:
  comment-contains-value: 'rpm-verify'
  projects:
• project-compare-type: ANT
  project-pattern: '{project}'
  branches:
• branch-compare-type: ANT
  branch-pattern: '**/{branch}'
  file-paths:
• compare-type: ANT
  pattern: 'packages/**'

There have been such file changes, but the rpm-verify job wasn't triggered. The tox jobs were triggered as expected.

https://git.opendaylight.org/gerrit/#/c/73272/

https://git.opendaylight.org/gerrit/#/c/73274/