Updated openstack/openstack
Project: openstack/nova  ee06a032e4571f2a8612c8efa3d4f4a569c4e8a2
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Remove duplicates from exceptions list

Duplicated exceptions:
 exception.QuotaError
 exception.SecurityGroupLimitExceeded

Change-Id: Ie8d40cf6e0a1a7b2191877059b757a752aeb4e29