Add integration test code
Add integration test code

This commit adds a test script that can be used to verify
if the glance instance is functional.

varunarya10/puppet-glance,gwdg/puppet-glance,bodepd/puppet-glance,aquto/puppet-glance,aimonb/puppet-glance,TelekomCloud/puppet-glance,mjeanson/puppet-glance,TelekomCloud/puppet-glance,gwdg/puppet-glance,aimonb/puppet-glance,bodepd/puppet-glance,mjeanson/puppet-glance,aquto/puppet-glance,varunarya10/puppet-glance