Fix SecGroupQuotaTest in case of unlimited quota

If project has unlimited default SG qouta (-1) test incorrectly
processing negative value.

Related-PROD: PRODX-8495
Change-Id: I62bb9fe1941cfa9c8800da99ddb9bda5a6cda5d4
(cherry picked from commit 988b46926dc1ed79df96c0ec63107e02fca0897d)
1 file changed