Fix the default quota issue

This patch may not be the perfect solution and may not be
the right place in the code.

Please suggest if there is any better way to address this.

Change-Id: If8daacd0a229557b01e70b17b2f8976d00adca85
Fixes-bug: https://bugs.launchpad.net/opencontrail/+bug/1338848
Merge "Fix the default quota issue"