Use int in openstackmanager-servicegrouprecursewarning

To ensure consistency and understandable references.
<https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Openstackmanager-servicegrouprecursewarning/en>

Change-Id: I17a0932ce04bd59495fad88b2761f5197d707886
Merge "Use int in openstackmanager-servicegrouprecursewarning"